From 67515a357519a3c2fac699ba2e8c56e671b651c5 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Sun, 25 Dec 2022 00:37:06 -0500
Subject: day 25

---
 benches/2022.rs       |   5 +++
 data/2022/25.txt      | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/bin/2022/day25.rs |  63 +++++++++++++++++++++++++++
 src/bin/2022/main.rs  |   2 +
 4 files changed, 186 insertions(+)
 create mode 100644 data/2022/25.txt
 create mode 100644 src/bin/2022/day25.rs

diff --git a/benches/2022.rs b/benches/2022.rs
index 6b7363d..4d2f322 100644
--- a/benches/2022.rs
+++ b/benches/2022.rs
@@ -47,6 +47,8 @@ mod day21;
 mod day23;
 #[path = "../src/bin/2022/day24.rs"]
 mod day24;
+#[path = "../src/bin/2022/day25.rs"]
+mod day25;
 // NEXT MOD
 
 day!(2022, 1, day1);
@@ -72,6 +74,7 @@ day!(2022, 20, day20);
 day!(2022, 21, day21);
 day!(2022, 23, day23);
 day!(2022, 24, day24);
+day!(2022, 25, day25);
 // NEXT DAY
 
 fn bench_2022(c: &mut criterion::Criterion) {
@@ -100,6 +103,7 @@ fn bench_2022(c: &mut criterion::Criterion) {
             day_combined!(2022, 21, day21);
             day_combined!(2022, 23, day23);
             day_combined!(2022, 24, day24);
+            day_combined!(2022, 25, day25);
             // NEXT DAY COMBINED
         })
     });
@@ -131,5 +135,6 @@ criterion::criterion_main!(
     bench_2022day21,
     bench_2022day23,
     bench_2022day24,
+    bench_2022day25,
     // NEXT GROUP
 );
diff --git a/data/2022/25.txt b/data/2022/25.txt
new file mode 100644
index 0000000..bc619f6
--- /dev/null
+++ b/data/2022/25.txt
@@ -0,0 +1,116 @@
+1=-=2=-1000=0
+11=001122
+120-
+1-0
+202-0==-2-
+2-1010=2-2=01
+112=-2
+2-0=
+1-=2-=-1-0--0=1=0000
+1=0=0--021-0
+11000101=210
+21-111=2112=2==-
+111010-2
+2=10=-101-=--0
+2-=-2000012=0022=
+1-=11-01--2100
+1=2211-2-===
+2=--2-==-1
+1=12---02=2
+1==0=--11=01-1-
+121-21021
+12=1001=2=-=22
+1=2-212=2-0211
+20----11=
+10=100=0=0
+111
+1=--011==2--212121=
+2=-10=210200-2-=0
+1=-122=001-1
+2-0=0121=-0=0
+2-=20--1-=21-22=1=
+20011
+12=1--=-0--10-0=1-=
+2002=100=-00-
+202
+1=2==21-
+1=221--01=00-10=
+1--0-1=
+2-==11=222---
+21-10-=22
+1=--22-0-
+2-0-
+1-0=-2
+20-02102
+1=0=20----21=12=-
+20=111-12=21101=
+111=1=-2=0=--21
+11-
+10-1=01=-
+1222-10
+1=2-1
+20
+101==12-1-0
+1-=22=--=22=1=22
+1200-010-10=021
+1=2-10=-02--=-
+12-0=000=0
+1==10=00===1--
+2-1=-=1===1=-0=---
+1=11=120
+2===002010=-=0
+1==00212=01-002=221
+10020221===-
+1--01=-=0-20-101-=-
+112=101
+10-
+1220=1
+2=
+1=1120=--0
+11-21200=
+2==011-10-0==0=0=
+12-=102
+100-022
+1=1
+201-0--=-
+2-02
+21=11=00020
+12=20-
+1101=00-1
+1=0=-11--=-010-==1
+1-2-0=00=-=220=11-
+2-2
+12-2
+12=10=2-=
+20222110-10002
+1002=0
+12=11-=012
+1==
+1=00-01
+110101222-020--111
+2-0
+1-12=1
+222-10-12=00
+11=1=1
+10=2-00-121-2-=2
+1---22-1-0=00-1220
+2-=2210=-==2=010=
+12201-111-220
+2=122=022=22=12-1
+211===2=020
+121-2-0-=0==2=1
+1-0221200-21100-
+10
+1-11
+2===2=-2-
+1-0-2021-21==
+1==-00-=2-21===1200
+22
+1222=20=120=1-
+11=120001012==01-1
+2=-1--00
+10==121--221
+1=2100102=20012
+2==1-
+1-
+10-2--0
diff --git a/src/bin/2022/day25.rs b/src/bin/2022/day25.rs
new file mode 100644
index 0000000..3149365
--- /dev/null
+++ b/src/bin/2022/day25.rs
@@ -0,0 +1,63 @@
+#![allow(dead_code)]
+#![allow(unused_variables)]
+
+use advent_of_code::prelude::*;
+
+fn from_snafu(line: String) -> i64 {
+    let mut total = 0;
+    for c in line.chars() {
+        let digit = match c {
+            '2' => 2,
+            '1' => 1,
+            '0' => 0,
+            '-' => -1,
+            '=' => -2,
+            _ => panic!("unknown char {}", c),
+        };
+        total *= 5;
+        total += digit;
+    }
+    total
+}
+
+fn to_snafu(mut n: i64) -> String {
+    let mut s = String::new();
+    while n > 0 {
+        let rem = n % 5;
+        let c = match rem {
+            0 => '0',
+            1 => '1',
+            2 => '2',
+            3 => '=',
+            4 => '-',
+            _ => unreachable!(),
+        };
+        s.insert(0, c);
+        n = (n + 2) / 5;
+    }
+    s
+}
+
+pub fn parse(fh: File) -> Result<impl Iterator<Item = String>> {
+    Ok(parse::raw_lines(fh))
+}
+
+pub fn part1(lines: impl Iterator<Item = String>) -> Result<String> {
+    Ok(to_snafu(lines.map(from_snafu).sum()))
+}
+
+pub fn part2(_: impl Iterator<Item = String>) -> Result<i64> {
+    todo!()
+}
+
+#[test]
+fn test() {
+    assert_eq!(
+        part1(parse(parse::data(2022, 25).unwrap()).unwrap()).unwrap(),
+        "2-20=01--0=0=0=2-120"
+    );
+    // assert_eq!(
+    //     part2(parse(parse::data(2022, 25).unwrap()).unwrap()).unwrap(),
+    //     0
+    // );
+}
diff --git a/src/bin/2022/main.rs b/src/bin/2022/main.rs
index 10b06fe..46cc3bb 100644
--- a/src/bin/2022/main.rs
+++ b/src/bin/2022/main.rs
@@ -34,6 +34,7 @@ mod day20;
 mod day21;
 mod day23;
 mod day24;
+mod day25;
 // NEXT MOD
 
 #[paw::main]
@@ -63,6 +64,7 @@ fn main(opt: Opt) -> Result<()> {
         21 => advent_of_code::day!(2022, opt.day, opt.puzzle, day21),
         23 => advent_of_code::day!(2022, opt.day, opt.puzzle, day23),
         24 => advent_of_code::day!(2022, opt.day, opt.puzzle, day24),
+        25 => advent_of_code::day!(2022, opt.day, opt.puzzle, day25),
         // NEXT PART
         _ => panic!("unknown day {}", opt.day),
     }
-- 
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