From 791afead095bcc3cfd849774ae3415da7a502f15 Mon Sep 17 00:00:00 2001
From: kageru <kageru@encode.moe>
Date: Wed, 21 Dec 2022 13:32:51 +0100
Subject: [PATCH] Add 2022/21/1

---
 2022/inputs/day21     | 1901 +++++++++++++++++++++++++++++++++++++++++
 2022/src/bin/day21.rs |   93 ++
 2 files changed, 1994 insertions(+)
 create mode 100644 2022/inputs/day21
 create mode 100644 2022/src/bin/day21.rs

diff --git a/2022/inputs/day21 b/2022/inputs/day21
new file mode 100644
index 0000000..3814ef1
--- /dev/null
+++ b/2022/inputs/day21
@@ -0,0 +1,1901 @@
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+dbdl: mjtf * zqpw
+bznb: ntgb * rmvp
+mdzc: jhmp / rsml
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+pwjm: 2
+nzgc: crnw * vshp
+wrdd: 5
+sdtq: 2
+zfcc: 3
+gzpv: 5
+bhbm: 7
+gcvp: 3
+fvtc: 2
+hzqb: 3
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+dvsh: cswn + rmgw
+swlq: 5
+sfcf: hsfd * qhrz
+bqpt: mzvw * fhnq
+rjdp: 6
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+njzw: 1
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+czcw: 1
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+mpcs: mggp * hvhp
+brtt: 2
+mcfl: pcfp + vsgw
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+vmns: 12
+lzvf: jszb * bbcc
+tstl: 3
+nmgr: cjdb * zssm
+fzmm: 4
+qhdd: cfbt * hswh
+pdgz: 4
+sdtr: rjrn + fvbt
+hgmm: 2
+htvs: 15
+hqph: 5
+zptz: 3
+vbqb: 6
+tqbm: pmcd * nqsl
+hzmp: bsvc + gqwv
+mfdc: hbvf * dpnr
+gwmb: jvns / lzsp
+cdfg: 3
+smwh: 1
+jngz: 5
+mnbl: zmbv * dvvn
+zcgl: 2
+wpzm: 6
+dbww: 4
+djqr: 3
+nbsl: qllr + bgsh
+ttpt: 5
+jwtb: 5
+gnhd: 3
+scqj: ffdl * mdnz
+fhlv: hggq * htvs
+njww: 2
+ntld: 2
+nbhq: zpvp / lqgf
+rbsd: 8
+rplb: njmf * srnq
+sgsp: lwtd * hlcd
+tscg: 4
+vhhr: 3
+jwrp: bhnt * vfzd
+mjtf: 4
+mbfr: 3
+sdcw: 2
+ddrh: 7
+lpfz: bhzj - zvbf
+ptqt: 3
+wtdl: 2
+nnld: fvhd / ztcm
+dngc: ggch + ngbq
+lslc: 4
+msrg: 3
+prrc: bpsv * gvzf
+jrjn: lbtl + sbnc
+rwcf: wgmf * ctbv
+gclq: 10
+lzgq: 11
+rhps: njgp * msmv
+pzww: 8
+chpt: fsqh * lggh
+zvjw: rwcv * pdps
+trjv: 3
+rrtq: 4
+fgth: 3
+hvdb: ghwr + jsdm
+hbdc: vvzd / vcnq
+hgfq: 2
+lgnp: 5
+rnzj: vfng * bldr
+pdfv: 2
+fhwl: 10
+bthb: nctm + fhlf
+vngb: tgwr * dpbh
+jfmq: 3
+hdcf: 2
+zdmv: 2
+vsfb: 2
+wtls: czcb / qgtp
+gnfs: fmmf + hgtt
+gsrm: 3
+mrcn: 1
+swdz: 5
+ghsj: 1
+qvrw: bpzs * scrq
+rhwr: wcpr + hbzz
+zrnq: qrmg - ncmn
+ltdr: dggm * pgrh
+gsgd: lmjv - wjpz
+brwz: 2
+wtbn: mjrl * jzlt
+sgvh: 3
+jvlw: hbrw + szqm
+ljrn: 2
+tvrb: 3
+csvn: jhlz * nwpl
+czzg: 2
+rfbl: 2
+zblj: 3
+wttr: nmjn * jsrw
+zgzg: vvwt * hwcl
+dtrs: 9
+vghf: nvrh - flqb
+nprh: 2
+wsgm: 3
+crqr: 3
+srpj: ftsc + dbdl
+ztgn: 5
+zrfc: zlht * chdn
+bfzr: 18
+chfw: 3
+hfvz: 4
+bbcc: 12
+qpbc: qjsg / fhtm
+fdqq: wzrc + crdv
+shcc: 2
+dfsp: 2
+wqbz: 7
+lhfm: 2
+zcjz: vngb + hvmj
+swnr: 3
+zmmg: jzct / swtw
+pqfm: 13
+svdq: jdgh * tdtb
+wlnp: 6
+ztsb: 5
+wjql: 2
+qzcj: 2
+jnmf: 7
+pwhl: hjbq * qqbd
+mbws: qcqj * sgwj
+vjhw: 2
+rnqv: 10
+hzsd: 3
+gzmn: gplv - tsvw
+mwnb: vhbw * tvjr
+bsmt: 2
+hbpt: 2
+cdhb: 5
+gchv: 4
+pnqt: ntgj + mpvz
+pfcb: jmtc + rhwr
+btgm: wzzp + hhwj
+qsch: nsdp * tnnr
+lvzs: 4
+wclv: dtqc + dlpj
+djcs: wvmj * vpcz
+zncn: bzwc * lqqr
+lhlm: 2
+fdbp: nrlq + bsmp
+cpbd: sdtq + lhhc
+jppg: zjvm + wnzg
+wcpr: 18
+pfvf: 3
+qdmg: pgwq * nfmh
+ltmg: ncss * lqld
+nhvd: 2
+hfjl: 9
+sbhh: cgvb + qcpp
+pjgg: gtzt + tczz
+nfcc: 2
+nbbp: wqqr + vcbr
+wqqr: 8
+ngrj: qcnz * lpfz
+lrnq: 3
+znnv: mbpc / lcfl
+wmpj: 3
+chdd: tlgd * hbcz
+zbrb: sdcw * msjn
+wgfv: cgcr + mflf
+nfgh: 2
+gvjv: qzpg * sjhz
+bgsh: vtvm + cnpl
+wgdz: mstz * mfgh
+qzgj: mwqj * crjf
+rvhr: 4
+tdjp: djfn * ctwq
+wfjv: 5
+lqbw: 9
+fmmf: 13
+rmtn: 3
+nchv: 2
+qjsg: tvcq + jstq
+bpnn: qjss + ncvv
+qhgr: rfpz + ngqm
+nwrg: 5
+hmch: 2
+cfrd: 2
+cnhz: 13
+pbzf: zjvq * prgs
+hblr: lqdl * dsss
+bbpd: 11
+njrb: 16
+nmch: 3
+grcs: 3
+fwrq: 2
+fcpl: 2
+hztd: 3
+cgcr: znnv * flmh
+dtrj: sjbp * lcdv
+ffsn: 7
+pctw: 10
+rsml: 5
+hwpf: vjgh + fhzn
+dgsp: 2
+rrtg: 10
+pqwz: 2
+wdqs: 4
+mvgl: rwnb * pdfg
+qrjh: 2
+gvqz: 3
+mnbs: 7
+pnjb: fdfm + nphn
+dgvp: jgcg / czmj
+fbhl: 20
+nzmr: jsfv * fclr
+lzjv: pzpn + vbqb
+gggn: 15
+jzlt: zqmc + gbtn
+szrz: 9
+vqsn: gvjv + tnzw
+ftnb: 6
+pgwq: 15
+nzjd: dnwb - lrhn
+vlhz: 3
+fscs: zljr + wbfs
+bgdj: rqrd + tgvv
+jchq: hbpt * pmtq
+ntzf: cjfg * vdch
+tzvl: 2
+vgqm: ntsw + lwvz
+mmwf: 2
+qggt: 4
+jtmz: 4
+bsmn: rqwd * dwmn
+qwrp: nfgh * qjqt
+zfsh: 1
+mrmv: 5
+gfrl: 5
+rzmp: tlnn * mtzf
+mjfg: 2
+lwtd: 8
+bfqp: zbwg + wmvw
+mcnf: 4
+tvvn: lhdf + trrs
+bwlf: 3
+glqd: mdth - jnpg
+vdgw: 5
+hpmf: lwgg * vfzf
+wllz: pdfv * qgzj
+wcsd: trzs + plvb
+pmcd: 3
+lhdf: 3
+vbzn: rjdp * plqs
+tzpf: pwsz * fhcr
+llst: bnfz * rbtw
+wdnj: 4
+wcsf: 5
+hqcs: 3
+hgcd: 2
+wjpz: 15
+jbbb: 15
+vfct: sgcm * vrbp
+sgbq: dgdc + gbdl
+pwsz: wsgm * cjhp
+cvfc: trjv * jdvg
+sscc: vjhw * jnbd
+dgtn: 3
+lqld: 3
+vtvm: 12
+whlm: jbpn * zmdd
+njgp: zwvq + hmch
+lwrb: btsq * stmj
+rqnr: 16
+rbjq: sjzs / pfdq
+hrrf: 1
+vwzp: 3
+ggjl: 4
+dcff: 4
+zpvp: vczp * vfnb
+dpbh: qcjv * pfgh
+zvfs: 2
+qjss: 13
+qgtp: jbdr * nmch
+zphc: sjrm * dgsp
+mwjv: 3
+fftv: 3
+lwdq: rlzb + rgvt
+wvgd: jfbb * spbt
+cszr: 11
+wjst: 2
+jsrh: bqpt + bpcc
+ncsb: snpw * ddtq
+ldbw: wdvz + bgrw
+pnwl: hpbf + qdqg
+bgds: 3
+qdlp: dnpb / lhht
+bqws: swdz + brtt
+zbfn: dmhs * tjdc
+hdng: hztd * jvlw
+mfdb: rrtg * nbvp
+mjvw: tcvt * sfmz
+rfgp: hmqd + gcql
+rqwd: 4
+qwhb: tzvl * gnwz
+cbnf: drbn * jlzq
+rzzt: zpbz / bmzl
+gbgn: jptg * whnz
+fmvr: 4
+ldvf: 8
+fhnq: 10
+wrtv: 2
+rmcs: 2
+jbzq: 3
+fbjr: vwzp * ctdw
+jwgq: jchq * mvff
+hgtt: 1
+lcvc: mnbl * tsnd
+nfdg: rfmg * tcvr
+gbtn: 5
+crnw: 3
+bdrq: jlcj + jsrh
+rzbf: fmdn - wwjd
+ncvv: 1
+qdjp: zlcl + bpdt
+hwps: 3
+scfr: lslc * qjjq
+rqcr: nbbp * bnrh
+fpmv: 3
+sfmb: 9
+mwfh: pqtc + pwjm
+mbfl: cbps + pzzz
+mtpc: 8
+hrrc: 4
+fhgp: 2
+bhnt: gcnf + nstb
+jnnz: 2
+cmmm: 3
+vhnq: jppg * glgr
+njmf: 11
+djdl: jqrr + rwcf
+gwqc: cbnf + sqhc
+vvgg: bfbf * gttc
+mzrn: rqlw / ddrh
+hdwd: prrc * psdw
+hgmr: zrnq * fhgp
+sjsb: wqpd * blhf
+hmwb: 2
+mrfp: btsz + jwgq
+scjg: 13
+ttmb: wbwf * gcsd
+nvzj: jwdc * lzgq
diff --git a/2022/src/bin/day21.rs b/2022/src/bin/day21.rs
new file mode 100644
index 0000000..3e21dc9
--- /dev/null
+++ b/2022/src/bin/day21.rs
@@ -0,0 +1,93 @@
+#![feature(test, try_blocks, hash_drain_filter)]
+extern crate test;
+use aoc2022::{boilerplate, common::*};
+use fnv::FnvHashMap as HashMap;
+
+const DAY: usize = 21;
+type Parsed<'a> = HashMap<&'a [u8], Monkey<'a>>;
+
+#[derive(Clone, Copy)]
+enum Monkey<'a> {
+    Number(isize),
+    Add(&'a [u8], &'a [u8]),
+    Sub(&'a [u8], &'a [u8]),
+    Mul(&'a [u8], &'a [u8]),
+    Div(&'a [u8], &'a [u8]),
+}
+
+fn parse_input(raw: &str) -> Parsed {
+    raw.lines()
+        .map(|line| {
+            let key = &line.as_bytes()[0..4];
+            let value = line[6..].as_bytes();
+
+            if value[0].is_ascii_digit() {
+                return (key, Monkey::Number(parse_num(&line[6..])));
+            }
+            match value[5] {
+                b'+' => (key, Monkey::Add(&value[0..4], &value[7..])),
+                b'-' => (key, Monkey::Sub(&value[0..4], &value[7..])),
+                b'*' => (key, Monkey::Mul(&value[0..4], &value[7..])),
+                b'/' => (key, Monkey::Div(&value[0..4], &value[7..])),
+                _ => unreachable!(),
+            }
+        })
+        .collect()
+}
+
+fn part1(parsed: &Parsed) -> isize {
+    let mut missing = parsed.clone();
+    let mut resolved = HashMap::<&[u8], isize>::default();
+    // parsed.iter().filter_map(|(&k, m)| if let Monkey::Number(n) = m { Some((k, *n)) } else { None }).collect();
+    while !missing.is_empty() {
+        missing
+            .drain_filter(|&k, v| {
+                let o: Option<()> = try {
+                    resolved.insert(
+                        k,
+                        match v {
+                            Monkey::Number(n) => *n,
+                            Monkey::Add(a, b) => resolved.get(a)? + resolved.get(b)?,
+                            Monkey::Sub(a, b) => resolved.get(a)? - resolved.get(b)?,
+                            Monkey::Mul(a, b) => resolved.get(a)? * resolved.get(b)?,
+                            Monkey::Div(a, b) => resolved.get(a)? / resolved.get(b)?,
+                        },
+                    );
+                };
+                o.is_some()
+            })
+            .last();
+    }
+    let root: &[u8] = b"root";
+    resolved[root]
+}
+
+fn part2(parsed: &Parsed) -> usize {
+    unimplemented!()
+}
+
+boilerplate! {
+    TEST_INPUT == "\
+root: pppw + sjmn
+dbpl: 5
+cczh: sllz + lgvd
+zczc: 2
+ptdq: humn - dvpt
+dvpt: 3
+lfqf: 4
+humn: 5
+ljgn: 2
+sjmn: drzm * dbpl
+sllz: 4
+pppw: cczh / lfqf
+lgvd: ljgn * ptdq
+drzm: hmdt - zczc
+hmdt: 32",
+    tests: {
+        part1: { TEST_INPUT => 152 },
+        part2: { TEST_INPUT => 301 },
+    },
+    bench1 == 66174565793494,
+    bench2 == 0,
+    bench_parse: HashMap::len => 1901,
+}