Completed day 14 part 1
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59
day14/Cargo.lock
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59
day14/Cargo.lock
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@ -0,0 +1,59 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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[[package]]
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name = "aho-corasick"
|
||||
version = "0.7.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
dependencies = [
|
||||
"memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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||||
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[[package]]
|
||||
name = "day14"
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version = "0.1.0"
|
||||
dependencies = [
|
||||
"lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"regex 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "lazy_static"
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||||
version = "1.4.0"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
|
||||
[[package]]
|
||||
name = "memchr"
|
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version = "2.3.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
|
||||
[[package]]
|
||||
name = "regex"
|
||||
version = "1.3.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
|
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"memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"regex-syntax 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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||||
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||||
[[package]]
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||||
name = "regex-syntax"
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||||
version = "0.6.13"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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[[package]]
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name = "thread_local"
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||||
version = "1.0.1"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
|
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"lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[metadata]
|
||||
"checksum aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
|
||||
"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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||||
"checksum memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3197e20c7edb283f87c071ddfc7a2cca8f8e0b888c242959846a6fce03c72223"
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||||
"checksum regex 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b5508c1941e4e7cb19965abef075d35a9a8b5cdf0846f30b4050e9b55dc55e87"
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"checksum regex-syntax 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "e734e891f5b408a29efbf8309e656876276f49ab6a6ac208600b4419bd893d90"
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"checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
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11
day14/Cargo.toml
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11
day14/Cargo.toml
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@ -0,0 +1,11 @@
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[package]
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name = "day14"
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version = "0.1.0"
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authors = ["Tyler Hallada <tyler@hallada.net>"]
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edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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lazy_static = "1.4.0"
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regex = "1.3.3"
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62
day14/input/input.txt
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62
day14/input/input.txt
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1 HJDM, 1 BMPDP, 8 DRCX, 2 TCTBL, 1 KGWDJ, 16 BRLF, 2 LWPB, 7 KDFQ => 6 ZSPL
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1 PVRCK, 3 RSLR, 4 JBZD => 6 LCHRC
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10 FCBVC, 1 TSJSJ, 20 SQCQ => 9 PNQLP
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1 MBVL => 6 TSZJ
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1 HWGQF => 4 ZSLVH
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1 TBDSC, 13 TSZJ => 1 HRZH
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1 RSLR, 1 LJWM => 3 RSFJR
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1 VMZFB => 2 MBVL
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4 DSTHJ, 2 TSZJ, 13 MBVL => 4 ZWLGK
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1 MKTZ, 18 RVFJB, 1 RSLR, 2 HRZH, 14 ZWLGK, 4 RJFTV => 1 ZCVL
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6 KDFQ, 1 PNQLP, 1 HRZH => 9 DLPMH
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1 DSVT, 22 DRCX, 18 RJFTV, 2 MKTZ, 13 FVZBX, 15 SLTNZ, 7 ZSLVH => 5 GWJC
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2 JZSJ, 3 ZSLVH, 6 HNRXC => 8 RJFTV
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1 TSZJ => 7 GFVG
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5 VMZFB => 4 JBZD
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1 PBFZ, 23 JBZD, 2 LJWM => 1 TSJSJ
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7 ZPQD => 7 VMZFB
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2 LCHRC => 8 PXHK
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2 TSZJ, 1 KCXMF, 1 FKJGC => 6 HWGQF
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4 PBFZ => 1 FCBVC
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1 GMWHM, 4 JQBKW => 8 SQCQ
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5 SHMP => 5 PVRCK
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10 KCXMF => 3 DRCX
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15 VMZFB, 2 RSFJR => 6 KDFQ
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35 HNRXC => 2 CJLG
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8 MKTZ, 1 FCBVC, 12 HJDM => 9 BRLF
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171 ORE => 8 GMWHM
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8 RVFJB, 3 CJLG, 9 SLTNZ => 3 LWPB
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1 PXHK, 2 RSFJR => 3 FVZBX
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1 CJLG, 1 HRZH, 10 MKTZ => 8 KGWDJ
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1 RSFJR => 3 FKJGC
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1 NXCZM, 31 FKJGC => 2 MKTZ
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18 XLWBP => 6 MBLWL
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22 HNRXC => 8 FTGK
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3 KGWDJ, 1 MLBJ, 5 HJDM => 7 DSVT
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9 KDFQ => 5 NXCZM
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2 RVFJB, 4 LGDKL, 1 PXHK => 5 CVTR
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1 RSFJR, 6 GMWHM, 20 TSJSJ => 9 LGDKL
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5 KCXMF => 9 RBDP
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6 GWJC, 16 ZCVL, 29 JZSJ, 1 ZSPL, 35 MBLWL, 30 BWFRH, 2 MSFDB, 13 BMPDP, 11 FTGK, 1 ZWLGK => 1 FUEL
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6 GFVG, 2 TVQP => 8 HJDM
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1 CJLG, 13 PBFZ => 6 JZSJ
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3 CVTR => 3 BMPDP
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16 FPKMV, 1 ZSLVH => 8 MSFDB
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9 JBZD, 12 LCHRC => 8 TBDSC
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133 ORE => 3 LJWM
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107 ORE => 7 SHMP
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1 KDFQ, 1 LJWM => 9 FPKMV
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3 PXHK => 4 BWFRH
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123 ORE => 4 JQBKW
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2 FVZBX, 1 JZSJ => 8 XLWBP
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117 ORE => 2 ZPQD
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7 NXCZM => 7 HNRXC
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1 MLBJ, 22 RSLR => 8 KCXMF
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2 TBDSC => 8 RVFJB
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1 KDFQ, 23 DSTHJ => 7 SLTNZ
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3 RSFJR => 6 MLBJ
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5 PVRCK, 2 SQCQ => 9 RSLR
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1 LGDKL, 17 MBVL, 6 PNQLP => 5 TVQP
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3 RBDP => 6 TCTBL
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1 DLPMH, 1 GFVG, 3 MBVL => 2 DSTHJ
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21 VMZFB, 2 LJWM => 1 PBFZ
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6
day14/input/test1.txt
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6
day14/input/test1.txt
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10 ORE => 10 A
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1 ORE => 1 B
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7 A, 1 B => 1 C
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7 A, 1 C => 1 D
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7 A, 1 D => 1 E
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7 A, 1 E => 1 FUEL
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7
day14/input/test2.txt
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7
day14/input/test2.txt
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9 ORE => 2 A
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8 ORE => 3 B
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7 ORE => 5 C
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3 A, 4 B => 1 AB
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5 B, 7 C => 1 BC
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4 C, 1 A => 1 CA
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2 AB, 3 BC, 4 CA => 1 FUEL
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9
day14/input/test3.txt
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9
day14/input/test3.txt
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157 ORE => 5 NZVS
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165 ORE => 6 DCFZ
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44 XJWVT, 5 KHKGT, 1 QDVJ, 29 NZVS, 9 GPVTF, 48 HKGWZ => 1 FUEL
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12 HKGWZ, 1 GPVTF, 8 PSHF => 9 QDVJ
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179 ORE => 7 PSHF
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177 ORE => 5 HKGWZ
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7 DCFZ, 7 PSHF => 2 XJWVT
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165 ORE => 2 GPVTF
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3 DCFZ, 7 NZVS, 5 HKGWZ, 10 PSHF => 8 KHKGT
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12
day14/input/test4.txt
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12
day14/input/test4.txt
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2 VPVL, 7 FWMGM, 2 CXFTF, 11 MNCFX => 1 STKFG
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17 NVRVD, 3 JNWZP => 8 VPVL
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53 STKFG, 6 MNCFX, 46 VJHF, 81 HVMC, 68 CXFTF, 25 GNMV => 1 FUEL
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22 VJHF, 37 MNCFX => 5 FWMGM
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139 ORE => 4 NVRVD
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144 ORE => 7 JNWZP
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5 MNCFX, 7 RFSQX, 2 FWMGM, 2 VPVL, 19 CXFTF => 3 HVMC
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5 VJHF, 7 MNCFX, 9 VPVL, 37 CXFTF => 6 GNMV
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145 ORE => 6 MNCFX
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1 NVRVD => 8 CXFTF
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1 VJHF, 6 MNCFX => 4 RFSQX
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176 ORE => 6 VJHF
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17
day14/input/test5.txt
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17
day14/input/test5.txt
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171 ORE => 8 CNZTR
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7 ZLQW, 3 BMBT, 9 XCVML, 26 XMNCP, 1 WPTQ, 2 MZWV, 1 RJRHP => 4 PLWSL
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114 ORE => 4 BHXH
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14 VRPVC => 6 BMBT
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6 BHXH, 18 KTJDG, 12 WPTQ, 7 PLWSL, 31 FHTLT, 37 ZDVW => 1 FUEL
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6 WPTQ, 2 BMBT, 8 ZLQW, 18 KTJDG, 1 XMNCP, 6 MZWV, 1 RJRHP => 6 FHTLT
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15 XDBXC, 2 LTCX, 1 VRPVC => 6 ZLQW
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13 WPTQ, 10 LTCX, 3 RJRHP, 14 XMNCP, 2 MZWV, 1 ZLQW => 1 ZDVW
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5 BMBT => 4 WPTQ
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189 ORE => 9 KTJDG
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1 MZWV, 17 XDBXC, 3 XCVML => 2 XMNCP
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12 VRPVC, 27 CNZTR => 2 XDBXC
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15 KTJDG, 12 BHXH => 5 XCVML
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3 BHXH, 2 VRPVC => 7 MZWV
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121 ORE => 7 VRPVC
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7 XCVML => 6 RJRHP
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5 BHXH, 4 VRPVC => 5 LTCX
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298
day14/src/main.rs
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298
day14/src/main.rs
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#[macro_use]
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extern crate lazy_static;
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use std::collections::HashMap;
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use std::error::Error;
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use std::fs::read_to_string;
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use std::result;
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use std::str::FromStr;
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use regex::Regex;
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type Result<T> = result::Result<T, Box<dyn Error>>;
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const INPUT: &str = "input/input.txt";
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#[derive(Debug, PartialEq)]
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struct Reactions {
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reactions: HashMap<String, Reaction>,
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}
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#[derive(Debug, PartialEq)]
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struct Reaction {
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output: ChemicalAmount,
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inputs: Vec<ChemicalAmount>,
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}
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#[derive(Debug, Hash, PartialEq, Eq)]
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struct ChemicalAmount {
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chemical: String,
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amount: u32,
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}
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impl FromStr for Reactions {
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type Err = Box<dyn Error>;
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fn from_str(s: &str) -> Result<Reactions> {
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lazy_static! {
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static ref SOURCE_CHEMICALS: Regex =
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Regex::new(concat!(r"(?P<input_amount>\d+) (?P<input_chemical>\w+),? ",)).unwrap();
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static ref OUTPUT_CHEMICAL: Regex = Regex::new(concat!(
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r"=> (?P<output_amount>\d+) (?P<output_chemical>\w+)"
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))
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.unwrap();
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}
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let mut reactions = HashMap::new();
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for line in s.trim().split('\n') {
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let mut inputs: Vec<ChemicalAmount> = vec![];
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for captures in SOURCE_CHEMICALS.captures_iter(line) {
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inputs.push(ChemicalAmount {
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chemical: captures["input_chemical"].to_string(),
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amount: captures["input_amount"].parse()?,
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});
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}
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match OUTPUT_CHEMICAL.captures(line) {
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None => {
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return Err(From::from(
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"Malformed reactions, no output chemical could be found",
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));
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}
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Some(captures) => {
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let output = ChemicalAmount {
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chemical: captures["output_chemical"].to_string(),
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amount: captures["output_amount"].parse()?,
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};
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reactions.insert(output.chemical.clone(), Reaction { inputs, output });
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}
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};
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}
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Ok(Reactions { reactions })
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}
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}
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impl Reactions {
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fn new() -> Reactions {
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Reactions {
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reactions: HashMap::new(),
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}
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}
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}
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fn calculate_ore_required(
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reactions: &Reactions,
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produced_chemical: &ChemicalAmount,
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left_overs: &mut HashMap<String, u32>,
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) -> u32 {
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let reaction = &reactions.reactions[&produced_chemical.chemical];
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let mut needed_amount = produced_chemical.amount;
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let mut left_over = 0;
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if let Some(left_over_amount) = left_overs.get(&produced_chemical.chemical) {
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left_over = *left_over_amount;
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}
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if left_over > 0 {
|
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if left_over >= needed_amount {
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left_overs.insert(
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produced_chemical.chemical.clone(),
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left_over - needed_amount,
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);
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return 0;
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} else {
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left_overs.insert(produced_chemical.chemical.clone(), 0);
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needed_amount -= left_over;
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}
|
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}
|
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|
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let ratio: f32 = needed_amount as f32 / reaction.output.amount as f32;
|
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let production_count = ratio.ceil() as u32;
|
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left_overs.insert(
|
||||
produced_chemical.chemical.clone(),
|
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(reaction.output.amount * production_count) - needed_amount,
|
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);
|
||||
|
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if reaction.inputs.len() == 1 && reaction.inputs[0].chemical == "ORE" {
|
||||
return reaction.inputs[0].amount * production_count;
|
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} else {
|
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return reaction
|
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.inputs
|
||||
.iter()
|
||||
.map(|input| {
|
||||
calculate_ore_required(
|
||||
reactions,
|
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&ChemicalAmount {
|
||||
chemical: input.chemical.clone(),
|
||||
amount: input.amount * production_count,
|
||||
},
|
||||
left_overs,
|
||||
)
|
||||
})
|
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.sum();
|
||||
}
|
||||
}
|
||||
|
||||
fn read_reactions(filename: &str) -> Result<Reactions> {
|
||||
let reactions = read_to_string(filename)?.parse()?;
|
||||
Ok(reactions)
|
||||
}
|
||||
|
||||
fn solve_part1(filename: &str) -> Result<u32> {
|
||||
let reactions = read_reactions(filename)?;
|
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let mut left_overs = HashMap::new();
|
||||
Ok(calculate_ore_required(
|
||||
&reactions,
|
||||
&ChemicalAmount {
|
||||
chemical: "FUEL".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
&mut left_overs,
|
||||
))
|
||||
}
|
||||
|
||||
fn solve_part2(filename: &str) -> Result<u64> {
|
||||
Ok(1)
|
||||
}
|
||||
|
||||
fn main() -> Result<()> {
|
||||
println!("Part 1: {}", solve_part1(INPUT)?);
|
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println!("Part 2: {}", solve_part2(INPUT)?);
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||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
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||||
use super::*;
|
||||
|
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const TEST_INPUT1: &str = "input/test1.txt";
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const TEST_INPUT2: &str = "input/test2.txt";
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const TEST_INPUT3: &str = "input/test3.txt";
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const TEST_INPUT4: &str = "input/test4.txt";
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const TEST_INPUT5: &str = "input/test5.txt";
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|
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fn reactions_1() -> Reactions {
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Reactions {
|
||||
reactions: vec![
|
||||
(
|
||||
"E".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "E".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
inputs: vec![
|
||||
ChemicalAmount {
|
||||
chemical: "A".to_string(),
|
||||
amount: 7,
|
||||
},
|
||||
ChemicalAmount {
|
||||
chemical: "D".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
(
|
||||
"A".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "A".to_string(),
|
||||
amount: 10,
|
||||
},
|
||||
inputs: vec![ChemicalAmount {
|
||||
chemical: "ORE".to_string(),
|
||||
amount: 10,
|
||||
}],
|
||||
},
|
||||
),
|
||||
(
|
||||
"D".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "D".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
inputs: vec![
|
||||
ChemicalAmount {
|
||||
chemical: "A".to_string(),
|
||||
amount: 7,
|
||||
},
|
||||
ChemicalAmount {
|
||||
chemical: "C".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
(
|
||||
"FUEL".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "FUEL".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
inputs: vec![
|
||||
ChemicalAmount {
|
||||
chemical: "A".to_string(),
|
||||
amount: 7,
|
||||
},
|
||||
ChemicalAmount {
|
||||
chemical: "E".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
(
|
||||
"B".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "B".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
inputs: vec![ChemicalAmount {
|
||||
chemical: "ORE".to_string(),
|
||||
amount: 1,
|
||||
}],
|
||||
},
|
||||
),
|
||||
(
|
||||
"C".to_string(),
|
||||
Reaction {
|
||||
output: ChemicalAmount {
|
||||
chemical: "C".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
inputs: vec![
|
||||
ChemicalAmount {
|
||||
chemical: "A".to_string(),
|
||||
amount: 7,
|
||||
},
|
||||
ChemicalAmount {
|
||||
chemical: "B".to_string(),
|
||||
amount: 1,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
]
|
||||
.into_iter()
|
||||
.collect(),
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn reads_reactions() {
|
||||
assert_eq!(read_reactions(TEST_INPUT1).unwrap(), reactions_1());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn solves_part1() {
|
||||
assert_eq!(solve_part1(TEST_INPUT1).unwrap(), 31);
|
||||
assert_eq!(solve_part1(TEST_INPUT2).unwrap(), 165);
|
||||
assert_eq!(solve_part1(TEST_INPUT3).unwrap(), 13312);
|
||||
assert_eq!(solve_part1(TEST_INPUT4).unwrap(), 180697);
|
||||
assert_eq!(solve_part1(TEST_INPUT5).unwrap(), 2210736);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user