commit c75bb948c12968ff18f5c42cbb9f4bf28330cc94 · hauleth.dev/advent-of-code

+122
2022/day03.livemd
···

       1
       1
       +
       <!-- livebook:{"persist_outputs":true} -->

     

       2
       2
       +
       

     

       3
       3
       +
       # Day 03

     

       4
       4
       +
       

     

       5
       5
       +
       ```elixir

     

       6
       6
       +
       Mix.install([

     

       7
       7
       +
         {:kino_aoc, git: "https://github.com/ljgago/kino_aoc"}

     

       8
       8
       +
       ])

     

       9
       9
       +
       ```

     

       10
       10
       +
       

     

       11
       11
       +
       <!-- livebook:{"output":true} -->

     

       12
       12
       +
       

     

       13
       13
       +
       ```

     

       14
       14
       +
       :ok

     

       15
       15
       +
       ```

     

       16
       16
       +
       

     

       17
       17
       +
       ## Setup

     

       18
       18
       +
       

     

       19
       19
       +
       <!-- livebook:{"attrs":{"day":"3","session_secret":"ADVENT_OF_CODE_SESSION","variable":"puzzle_input","year":"2022"},"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->

     

       20
       20
       +
       

     

       21
       21
       +
       ```elixir

     

       22
       22
       +
       {:ok, puzzle_input} =

     

       23
       23
       +
         KinoAOC.download_puzzle("2022", "3", System.fetch_env!("LB_ADVENT_OF_CODE_SESSION"))

     

       24
       24
       +
       ```

     

       25
       25
       +
       

     

       26
       26
       +
       <!-- livebook:{"output":true} -->

     

       27
       27
       +
       

     

       28
       28
       +
       ```

     

       29
       29
       +
       {:ok,

     

       30
       30
       +
        "gfWpjRRQffQGCHHJsGqjsj\nSclzJZZvmmnPbJtVSqqNBqVCBdSCsd\ntlbvZJDZtmtPcJmlPnhMFQWWpMRFTfLDRRTWRp\nHjMPgSWjVrjgbHRRSSMRgjRdpdbGdlcdCvQfcCdlwQJfdf\nLNDnhtNtLNFFZDtFnhzvdldDflvvDCdlJfldpJ\nZFLFZZmFtFtTNTSPRrVPWWMpRP\nqLBSBLRwmgzqCbzCffDlrfCV\nTFFFHNWFMFFMpHpGHMTHGNhrldWZCsdZsslZlZfrflDVss\nPTMcPGntTThHhTGctnMvSwjjvmmqLBmnjqqgCR\nnClJtMwwntqVVPJcgZqq\nmjpsDcrcSSFFPZqFBWWgVP\nvQcjsvhrvvrmhbmNHMNnlHbNMtCtNM\nbgvvhnTQtjrrrhsDDf\npLSMltLzLLSjFrSSjrSJHD\nzNWRLBdZPllPQtCvttgCqb\nDRlDrrFTNDNlgzsGTBfcnqhhcnJfcrCSqc\nMMmmdWtdLmvtldHjMmQfPBqSJWnfCCCqcWSSPJ\nvjHMjLmjpLtHptQLmHvwTRgNVVpTzZFZgZRlsVTN\nrzpMpDCGFCFFjRFsRPFRNFPv\nfWclbHCHtSmfvjnmfsvZ\nwTcTlSwwtQtWclBQBLGMLMCLVzVLwJGqLd\nMQSjLNjPPLLSBPjfQhSPHjDVCjDtVVpDHwbwVpbD\nRcmWzsRrzZrmTszWRqWlmRJscbtHwCbndCtcDVddDpdnVnbt\nJTsrGGTqmwTlWmTzJzWmhhPLLGgPFgBffSSPhFFM\nqMMRNZMDDNWLPqfzCgDcGncVDCgG\nwwBFhwhhBgmcVzhghG\ntbJbjjtJvwtdtwjpFtlbvtdTLNSMqNqMMgqNHPlZRTNggL\nqmjMHsZmZSbjbZMjSLFFFFwgsgvFswpwww\nhRJBhmnhhvFFwhcv\nllfWDWzrzBNTRfNBrWzzTmZbGTMjPqMmZPjVbSZGSP\nCRRPLwwcclcGVppQ\nSHFjDjjHDTfSDNTTHfSHjQVGrpmllQQWltVVVZGp\nHFlqzDTfqlzwbgPJLwCP\nWRCNLphpLppSCWVHNfLRzVnQMnBnMddPMQDFQgrhPQFM\njTjJqvqjvPVJFJFBJF\nqTsZbvGqqZlstsmZVljtwqwSHHNWczHSSRcWNSRHzzNfbW\nglgzDzHjSrVHcVgbrjmNsscNGmNWssGNNtst\nhHPQLHJpwdLpdHfQQtnZmNMwnZGZWwsFZM\nQpdhPJRTJfPphJfhCBlVqVvgvVDBbvVqDbHD\nVtHzjZpjVtHrprgGmjHsGHNdSJFQRcLJqCdQcSqJNpcq\nbBWfTPwhbfDlMnhffRwQJQNdqJcLFQLSdR\nbhBhvfMWTnlDnTBfPSmvmjsjmmGtzHtsHm\npcRPRPWrSDcJGZSStmwZZS\nVnLfCfTlfVzfnMMBCqVNZJdtjNtJjhJdGNNbwT\nBLvqCCMVsnRQsPQgDcZH\ncQbqqQhDGhlQfQlhQrqGsTNgLgCpRgLTPPPLNbpg\nwtHVddVFwSHznZwwznCpRBdjppNBNTTdCjRR\nZtWFwWtSmvVnwZDrCMGfQlDDJQmD\nPzPZGCZzrZrlhdjdCqfCsqQdRD\ncbvZLVVFvbbNSNFHSDnsDQdnfqNQDRngsR\nFJHSLSFSScJJbWHFmFVFSZmrrzBmhtBwmzBMPMPzPh\nnlpFcLBgcVcLbssGVBGGrlpGPhJJJJJqPBZPDNMQMJJhJQZZ\nSSTjHzfHwtZSPVQVQMRQ\nTzVHwWfTtzwdVzsbFnGgsbdcGrLc\nFppVBRVZDdLmrDGmmfrQ\nNtNMPNshJCzznLGJSrqRrRrr\ntRssthhPlCWhPzsWtzhzCbVVjwTpVwdZZTpwjbdBbwBc\nTTWblHWScvPCCHTWFzSrqqsNNSmdmqrrpz\nRLRwjjnjZNprzmmZcq\nQQgtQnccQDGjgLDRRcLthQhFBvCbMtMHTWlBFllBbFCMTW\nWnBVNvDnVsNvZWdrWDLVDMbsHpTjpHCSSClsbSCCMH\nGPFtmztzgPhRFtJTdbTwjppSCjpgSl\nhJcfPtQhdtWNVZqNnqNQ\nGLcqZPPsnqQcFsmBBrqRvrddNqrC\nMtHthJwLllwvjRvvtrvBRS\nVHMfDLbpfznszZQG\nWBSdPlQPRfBtGQPfBGPBJgzgjwsJzsszJwCrdwCT\nZpppVpMVpnVHMVVbZRJrCgwRzTJrwNJw\nMvhmnpLqLmhVmBlftRQBFSlR\nhhQlSJqhtCSnqZJnqShSlNDwRzpvdwRlMBMMdcjRjMpMRc\nfrrGmLmWbfFrsmFHmBzBvBcwdJbvpjzbMM\nmmgFrVGLWJLFGsgfhSVtVPqntqnnSStN\nSFJTJTSqswwFQbwf\ncDtcWPclrtPwVsfssQmN\nHDtwWCgWdggdzSGJMSzGMq\nJpqJtWRJMhCMJpMQCWtFrjgHdgdlgllwNjlQjldH\nfBzPZcZvnBmDnZvZBZDmPvglVVVdgHHSwrNRgVgwNPRH\nGbZnZccfvcsZmccsmnnZTRbCCMWFTWJqFCCMJFRT\nvrrFqrFTBTmLmNrLMqMTHddJbHpWnhdWdWbHhJGM\nwBzfwzcQSzWSSshpdWGp\ngwjPPPDQtzQlzQDPqTgLBRmRqZBvqFNR\nbWVptFFsbPcZsGLhsZGmLB\nqnWrnrHdMCDCNqfWmvRRZSSRLdRGZGRG\nnNqqNDfMrMWHDQNHzWfHNDnwzblpzFlbwtFbVVlwVcPJpP\nBHJhlHdJQggvddglJBBhglhQzZHPZpFFPDMzFDDRDFZZDFZD\nrSTfqnCffMfCVfCLNqbzbjWNDbbWDPFpPFbP\nnfnnrSfCTVSwrqSLCGfTGlgQhlvsGMJQJBhhssJhGc\ntBjjDjjqfDjLfJlrLgglvmrlmrcc\nTwNNTVhwwpgvGSNNSssS\nTbwhnvvChhbVRTPPRJBJQQfJttMQQJCQfW\nmWSvSQVgmWQsQvspQJlrlLnJLLpCClhhlp\nbFHRjZdNjjBZzFzhtnCllCcJLrCBll\nHFFNHbdZZLZjfPFjHVQmWDDVsvsmTqVqDf\nJJPllQQClqgBCgdHwHbpjVTwHd\ntmGZtjGjHZpVbfMT\nShGjNGWmDSNcNRtGmshDRzzCvzQJJRBLrvlrBPJv\ncTpqsTWqVVpsNLfvCDFlMFDVFL\nJnndJPddQgzHlvMJFDhLCG\nBjtntgdRnQgzjdBRQBlpNWrTTlNTSwNpWS\nqHmqLVLjmVqsDBLtmjmbtPwCTwwPzGWRgGwGwMwW\nZhcCNCSprRTWTwSnWW\nhflhZvvQhppZfcNpvrhpQHjVjLmbVmmVHVCFDvqVFb\nnnNrwDnZrspwDNnZsNSDsNbCmpjvMTPQjLMmPmmQPGBTQP\nFdVtRdRfctBQPmTtTLQB\nqhzWVWJqVHwbhlLSsS\nhtWmhDhFztnztDhtBmBtghPRSrpfjVwPdfPwpwnRSVrr\ncbCHvgJGcTqbqcbqqqcqsMsRVrSCwffdRPPpVpwCRSwfjj\nGlgGQqTqbgQzttmBNNFz\nNWQNQgdTgjQNddTZfrCQWRDnnnbqnLqnRcjJlqqvDj\nFtSSmSmJhpllcclDvpln\nJBVVSsSFBVBttShFGSPQfCGNdrMfZZTQTZNNdC\nHgHthMhphcbfbMMfHhsGGDCRRVlcVSScsCRz\nnWvPFqLqPNdjnNLnjdJnPdWjGlssDPSsllVCRzlTCTGlSDzS\nRvddJRJQHwQwpZZb\ngdZwgpjZZQtHTdrWrwdpWRnlhNBRlLbFthNhflhBnL\nCVzDCPGMVqVmGsGGbJCmCDvMcRcqnBFFFnRBBNRBBNqhnFfF\nDsmSGsGPzvMGJvdbgTSTbjbSSdgH\njBGmbNBQGdBNNDJNQRLLVDsHtDRzHHZZcH\nwCWPFWPCrPhPrplvprhwpCHHtszttqZslRVHLtzVlJZL\nvprMMvMnJCwnnPShNGSTfGSfNmmgdNff\nbPtLbvVWWztbLSVVnbszpzQsrcDDBdpRcDrs\nllZmgCZqgCFgmdRdJcscBdJsmQ\nFZlgfqCFfgZHlqCMCglwCFGWntLLSMRSPGPVttWRtVGL\nvtnDsDtrnrSvrMVmbrrJg" <> ...}

     

       31
       31
       +
       ```

     

       32
       32
       +
       

     

       33
       33
       +
       ```elixir

     

       34
       34
       +
       bags =

     

       35
       35
       +
         puzzle_input

     

       36
       36
       +
         |> String.split("\n", trim: true)

     

       37
       37
       +
       ```

     

       38
       38
       +
       

     

       39
       39
       +
       <!-- livebook:{"output":true} -->

     

       40
       40
       +
       

     

       41
       41
       +
       ```

     

       42
       42
       +
       ["gfWpjRRQffQGCHHJsGqjsj", "SclzJZZvmmnPbJtVSqqNBqVCBdSCsd",

     

       43
       43
       +
        "tlbvZJDZtmtPcJmlPnhMFQWWpMRFTfLDRRTWRp", "HjMPgSWjVrjgbHRRSSMRgjRdpdbGdlcdCvQfcCdlwQJfdf",

     

       44
       44
       +
        "LNDnhtNtLNFFZDtFnhzvdldDflvvDCdlJfldpJ", "ZFLFZZmFtFtTNTSPRrVPWWMpRP", "qLBSBLRwmgzqCbzCffDlrfCV",

     

       45
       45
       +
        "TFFFHNWFMFFMpHpGHMTHGNhrldWZCsdZsslZlZfrflDVss", "PTMcPGntTThHhTGctnMvSwjjvmmqLBmnjqqgCR",

     

       46
       46
       +
        "nClJtMwwntqVVPJcgZqq", "mjpsDcrcSSFFPZqFBWWgVP", "vQcjsvhrvvrmhbmNHMNnlHbNMtCtNM",

     

       47
       47
       +
        "bgvvhnTQtjrrrhsDDf", "pLSMltLzLLSjFrSSjrSJHD", "zNWRLBdZPllPQtCvttgCqb",

     

       48
       48
       +
        "DRlDrrFTNDNlgzsGTBfcnqhhcnJfcrCSqc", "MMmmdWtdLmvtldHjMmQfPBqSJWnfCCCqcWSSPJ",

     

       49
       49
       +
        "vjHMjLmjpLtHptQLmHvwTRgNVVpTzZFZgZRlsVTN", "rzpMpDCGFCFFjRFsRPFRNFPv", "fWclbHCHtSmfvjnmfsvZ",

     

       50
       50
       +
        "wTcTlSwwtQtWclBQBLGMLMCLVzVLwJGqLd", "MQSjLNjPPLLSBPjfQhSPHjDVCjDtVVpDHwbwVpbD",

     

       51
       51
       +
        "RcmWzsRrzZrmTszWRqWlmRJscbtHwCbndCtcDVddDpdnVnbt", "JTsrGGTqmwTlWmTzJzWmhhPLLGgPFgBffSSPhFFM",

     

       52
       52
       +
        "qMMRNZMDDNWLPqfzCgDcGncVDCgG", "wwBFhwhhBgmcVzhghG",

     

       53
       53
       +
        "tbJbjjtJvwtdtwjpFtlbvtdTLNSMqNqMMgqNHPlZRTNggL", "qmjMHsZmZSbjbZMjSLFFFFwgsgvFswpwww",

     

       54
       54
       +
        "hRJBhmnhhvFFwhcv", "llfWDWzrzBNTRfNBrWzzTmZbGTMjPqMmZPjVbSZGSP", "CRRPLwwcclcGVppQ",

     

       55
       55
       +
        "SHFjDjjHDTfSDNTTHfSHjQVGrpmllQQWltVVVZGp", "HFlqzDTfqlzwbgPJLwCP",

     

       56
       56
       +
        "WRCNLphpLppSCWVHNfLRzVnQMnBnMddPMQDFQgrhPQFM", "jTjJqvqjvPVJFJFBJF",

     

       57
       57
       +
        "qTsZbvGqqZlstsmZVljtwqwSHHNWczHSSRcWNSRHzzNfbW", "glgzDzHjSrVHcVgbrjmNsscNGmNWssGNNtst",

     

       58
       58
       +
        "hHPQLHJpwdLpdHfQQtnZmNMwnZGZWwsFZM", "QpdhPJRTJfPphJfhCBlVqVvgvVDBbvVqDbHD",

     

       59
       59
       +
        "VtHzjZpjVtHrprgGmjHsGHNdSJFQRcLJqCdQcSqJNpcq", "bBWfTPwhbfDlMnhffRwQJQNdqJcLFQLSdR",

     

       60
       60
       +
        "bhBhvfMWTnlDnTBfPSmvmjsjmmGtzHtsHm", "pcRPRPWrSDcJGZSStmwZZS",

     

       61
       61
       +
        "VnLfCfTlfVzfnMMBCqVNZJdtjNtJjhJdGNNbwT", "BLvqCCMVsnRQsPQgDcZH",

     

       62
       62
       +
        "cQbqqQhDGhlQfQlhQrqGsTNgLgCpRgLTPPPLNbpg", "wtHVddVFwSHznZwwznCpRBdjppNBNTTdCjRR",

     

       63
       63
       +
        "ZtWFwWtSmvVnwZDrCMGfQlDDJQmD", "PzPZGCZzrZrlhdjdCqfCsqQdRD", "cbvZLVVFvbbNSNFHSDnsDQdnfqNQDRngsR",

     

       64
       64
       +
        ...]

     

       65
       65
       +
       ```

     

       66
       66
       +
       

     

       67
       67
       +
       ```elixir

     

       68
       68
       +
       defmodule Day03 do

     

       69
       69
       +
         def count(list) do

     

       70
       70
       +
           list

     

       71
       71
       +
           |> Enum.map(fn v -> Enum.reduce(v, &MapSet.intersection/2) end)

     

       72
       72
       +
           |> Enum.flat_map(&Enum.to_list/1)

     

       73
       73
       +
           |> Enum.map(fn

     

       74
       74
       +
             c when c in ?a..?z -> c - ?a + 1

     

       75
       75
       +
             c when c in ?A..?Z -> c - ?A + 27

     

       76
       76
       +
           end)

     

       77
       77
       +
           |> Enum.sum()

     

       78
       78
       +
         end

     

       79
       79
       +
       end

     

       80
       80
       +
       ```

     

       81
       81
       +
       

     

       82
       82
       +
       <!-- livebook:{"output":true} -->

     

       83
       83
       +
       

     

       84
       84
       +
       ```

     

       85
       85
       +
       {:module, Day03, <<70, 79, 82, 49, 0, 0, 9, ...>>, {:count, 1}}

     

       86
       86
       +
       ```

     

       87
       87
       +
       

     

       88
       88
       +
       ## Task 1

     

       89
       89
       +
       

     

       90
       90
       +
       ```elixir

     

       91
       91
       +
       bags

     

       92
       92
       +
       |> Enum.map(fn bag ->

     

       93
       93
       +
         size = byte_size(bag)

     

       94
       94
       +
         half = div(size, 2)

     

       95
       95
       +
       

     

       96
       96
       +
         {b1, b2} = String.split_at(bag, half)

     

       97
       97
       +
       

     

       98
       98
       +
         [MapSet.new(to_charlist(b1)), MapSet.new(to_charlist(b2))]

     

       99
       99
       +
       end)

     

       100
       100
       +
       |> Day03.count()

     

       101
       101
       +
       ```

     

       102
       102
       +
       

     

       103
       103
       +
       <!-- livebook:{"output":true} -->

     

       104
       104
       +
       

     

       105
       105
       +
       ```

     

       106
       106
       +
       7845

     

       107
       107
       +
       ```

     

       108
       108
       +
       

     

       109
       109
       +
       ## Task 2

     

       110
       110
       +
       

     

       111
       111
       +
       ```elixir

     

       112
       112
       +
       bags

     

       113
       113
       +
       |> Enum.map(&MapSet.new(to_charlist(&1)))

     

       114
       114
       +
       |> Enum.chunk_every(3)

     

       115
       115
       +
       |> Day03.count()

     

       116
       116
       +
       ```

     

       117
       117
       +
       

     

       118
       118
       +
       <!-- livebook:{"output":true} -->

     

       119
       119
       +
       

     

       120
       120
       +
       ```

     

       121
       121
       +
       2790

     

       122
       122
       +
       ```