Advent of Code solutions
Start Year 2025, done day 1
+341
-37
+10
Cargo.lock
+10
Cargo.lock
···
9
9
"advent_core",
10
10
"macros",
11
11
"y_2024",
12
+
"y_2025",
12
13
]
13
14
14
15
[[package]]
···
330
331
"regex",
331
332
"utils",
332
333
]
334
+
335
+
[[package]]
336
+
name = "y_2025"
337
+
version = "0.1.0"
338
+
dependencies = [
339
+
"advent_core",
340
+
"macros",
341
+
"utils",
342
+
]
+1
Cargo.toml
+1
Cargo.toml
+1
-1
advent_core/src/bootstrap.rs
+1
-1
advent_core/src/bootstrap.rs
+1
-1
advent_core/src/lib.rs
+1
-1
advent_core/src/lib.rs
+1
-1
advent_core/src/parser.rs
+1
-1
advent_core/src/parser.rs
+1
-1
advent_core/src/year.rs
+1
-1
advent_core/src/year.rs
+8
-8
justfile
+8
-8
justfile
···
6
6
day := `nu -c 'date now | format date "%_d" | str trim'`
7
7
8
8
# Run a specific part of today's problem
9
-
p P in="":
10
-
cargo run --release -- solve {{year}}:{{day}}:{{P}} {{in}}
9
+
p P in="" ARGS="":
10
+
cargo run {{ARGS}} -- solve {{year}}:{{day}}:{{P}} {{in}}
11
11
12
12
# Run a specific day and part of this year
13
-
dp DP in="":
14
-
cargo run --release -- solve {{year}}:{{DP}} {{in}}
13
+
dp DP in="" ARGS="":
14
+
cargo run {{ARGS}} -- solve {{year}}:{{DP}} {{in}}
15
15
16
16
# Run a specific year's day's part
17
-
dyp DYP in="":
18
-
cargo run --release -- solve {{DYP}} {{in}}
17
+
dyp DYP in="" ARGS="":
18
+
cargo run {{ARGS}} -- solve {{DYP}} {{in}}
19
19
20
20
# Create a new year crate
21
21
prep:
···
29
29
test-all:
30
30
cargo test -p y_{{year}} --release
31
31
32
-
# Open VSCodium to today's file
32
+
# Open Editor to today's file
33
33
start:
34
-
codium . --goto years/{{year}}/src/day_{{day}}.rs
34
+
nvim years/{{year}}/src/day_{{day}}.rs
+24
-24
macros/src/lib.rs
+24
-24
macros/src/lib.rs
···
1
1
extern crate proc_macro;
2
2
3
-
use advent_core::MAX_DAY;
4
-
5
3
use proc_macro::TokenStream;
6
4
7
-
fn make_day_mods() -> String {
8
-
(1..=MAX_DAY)
5
+
fn make_day_mods(days: usize) -> String {
6
+
(1..=days)
9
7
.map(|day| format!("pub mod day_{day};", day = day))
10
8
.collect::<Vec<_>>()
11
9
.join("\n")
12
10
}
13
11
14
-
fn make_use_days() -> String {
15
-
(1..=MAX_DAY)
12
+
fn make_use_days(days: usize) -> String {
13
+
(1..=days)
16
14
.map(|day| format!("use day_{day}::Day{day};", day = day))
17
15
.collect::<Vec<_>>()
18
16
.join("\n")
19
17
}
20
18
21
-
fn make_day_match(inner: &str) -> String {
22
-
(1..=MAX_DAY)
19
+
fn make_day_match(inner: &str, days: usize) -> String {
20
+
(1..=days)
23
21
.map(|day| format!("{day} => {},", inner.replace("{day}", &day.to_string())))
24
22
.collect::<Vec<_>>()
25
23
.join("\n")
26
24
}
27
25
28
-
fn make_day_tests() -> String {
29
-
(1..=MAX_DAY)
26
+
fn make_day_tests(days: usize) -> String {
27
+
(1..=days)
30
28
.map(|day| {
31
29
format!(
32
30
"
···
45
43
.join("\n")
46
44
}
47
45
48
-
fn get_solve_day() -> String {
49
-
let inner = make_day_match("Day{day}::run_part(part, input)");
50
-
let inner2 = make_day_match("{Day{day}::bench_part(part, input);}");
46
+
fn get_solve_day(days: usize) -> String {
47
+
let inner = make_day_match("Day{day}::run_part(part, input)", days);
48
+
let inner2 = make_day_match("{Day{day}::bench_part(part, input);}", days);
51
49
format!(
52
50
"
53
51
fn solve_day(day: usize, part: usize, input: Option<&str>) -> Option<String> {{
···
65
63
)
66
64
}
67
65
68
-
fn get_solve_day_both_parts() -> String {
69
-
let inner = make_day_match("Day{day}::run_all_parts(extra_indent)");
66
+
fn get_solve_day_both_parts(days: usize) -> String {
67
+
let inner = make_day_match("Day{day}::run_all_parts(extra_indent)", days);
70
68
format!(
71
69
"
72
70
fn solve_day_both_parts(day: usize, extra_indent: &str) {{
···
79
77
)
80
78
}
81
79
82
-
fn make_year_struct(year: &str) -> String {
80
+
fn make_year_struct(year: &str, days: usize) -> String {
83
81
format!(
84
82
"
85
83
pub struct Year{year};
···
91
89
92
90
{solve_day_both_parts}
93
91
}}",
94
-
solve_day = get_solve_day(),
95
-
solve_day_both_parts = get_solve_day_both_parts()
92
+
solve_day = get_solve_day(days),
93
+
solve_day_both_parts = get_solve_day_both_parts(days)
96
94
)
97
95
}
98
96
99
-
fn make_tests() -> String {
97
+
fn make_tests(days: usize) -> String {
100
98
format!(
101
99
"
102
100
#[cfg(test)]
···
106
104
107
105
{day_tests}
108
106
}}",
109
-
day_tests = make_day_tests()
107
+
day_tests = make_day_tests(days)
110
108
)
111
109
}
112
110
···
114
112
pub fn year(item: TokenStream) -> TokenStream {
115
113
let year = item.to_string();
116
114
117
-
let mods = make_day_mods();
118
-
let uses = make_use_days();
115
+
let days = if year == "2024" { 25 } else { 12 };
119
116
120
-
let year_struct = make_year_struct(&year);
117
+
let mods = make_day_mods(days);
118
+
let uses = make_use_days(days);
121
119
122
-
let tests = make_tests();
120
+
let year_struct = make_year_struct(&year, days);
121
+
122
+
let tests = make_tests(days);
123
123
124
124
format!(
125
125
"
+1
-1
src/main.rs
+1
-1
src/main.rs
+10
years/2025/Cargo.toml
+10
years/2025/Cargo.toml
+70
years/2025/src/day_1.rs
+70
years/2025/src/day_1.rs
···
1
+
use advent_core::{Day, day_stuff, ex_for_day};
2
+
3
+
pub struct Day1;
4
+
5
+
#[derive(Debug, Clone, PartialEq, Eq)]
6
+
pub enum Dir {
7
+
Left,
8
+
Right,
9
+
}
10
+
11
+
#[derive(Clone, Debug)]
12
+
pub struct Rot {
13
+
dir: Dir,
14
+
amnt: isize,
15
+
}
16
+
17
+
impl Day for Day1 {
18
+
fn part_1(input: Self::Input) -> Option<String> {
19
+
let mut curr = 50;
20
+
let mut at_0 = 0;
21
+
for rot in input {
22
+
let amnt = if rot.dir == Dir::Left {
23
+
-rot.amnt
24
+
} else {
25
+
rot.amnt
26
+
};
27
+
curr = (curr + amnt).rem_euclid(100);
28
+
if curr == 0 {
29
+
at_0 += 1;
30
+
}
31
+
}
32
+
33
+
Some(at_0.to_string())
34
+
}
35
+
36
+
fn part_2(input: Self::Input) -> Option<String> {
37
+
let mut curr = 50;
38
+
let mut at_0 = 0;
39
+
for rot in input {
40
+
let amnt = if rot.dir == Dir::Left {
41
+
-rot.amnt
42
+
} else {
43
+
rot.amnt
44
+
};
45
+
at_0 += if rot.dir == Dir::Right {
46
+
(curr + rot.amnt) / 100
47
+
} else {
48
+
(if curr == 0 { 0 } else { 100 - curr } + rot.amnt) / 100
49
+
};
50
+
curr = (curr + amnt).rem_euclid(100);
51
+
}
52
+
53
+
Some(at_0.to_string())
54
+
}
55
+
56
+
day_stuff!(1, "3", "6", Vec<Rot>);
57
+
58
+
fn parse_input(input: &str) -> Self::Input {
59
+
input
60
+
.lines()
61
+
.map(|l| {
62
+
let (dir, amnt) = l.split_at(1);
63
+
Rot {
64
+
dir: if dir == "L" { Dir::Left } else { Dir::Right },
65
+
amnt: amnt.parse().unwrap(),
66
+
}
67
+
})
68
+
.collect()
69
+
}
70
+
}
+17
years/2025/src/day_10.rs
+17
years/2025/src/day_10.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day10;
5
+
6
+
impl Day for Day10 {
7
+
8
+
day_stuff!(10, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_11.rs
+17
years/2025/src/day_11.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day11;
5
+
6
+
impl Day for Day11 {
7
+
8
+
day_stuff!(11, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_12.rs
+17
years/2025/src/day_12.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day12;
5
+
6
+
impl Day for Day12 {
7
+
8
+
day_stuff!(12, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_2.rs
+17
years/2025/src/day_2.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day2;
5
+
6
+
impl Day for Day2 {
7
+
8
+
day_stuff!(2, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_3.rs
+17
years/2025/src/day_3.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day3;
5
+
6
+
impl Day for Day3 {
7
+
8
+
day_stuff!(3, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_4.rs
+17
years/2025/src/day_4.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day4;
5
+
6
+
impl Day for Day4 {
7
+
8
+
day_stuff!(4, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_5.rs
+17
years/2025/src/day_5.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day5;
5
+
6
+
impl Day for Day5 {
7
+
8
+
day_stuff!(5, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_6.rs
+17
years/2025/src/day_6.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day6;
5
+
6
+
impl Day for Day6 {
7
+
8
+
day_stuff!(6, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_7.rs
+17
years/2025/src/day_7.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day7;
5
+
6
+
impl Day for Day7 {
7
+
8
+
day_stuff!(7, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_8.rs
+17
years/2025/src/day_8.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day8;
5
+
6
+
impl Day for Day8 {
7
+
8
+
day_stuff!(8, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+17
years/2025/src/day_9.rs
+17
years/2025/src/day_9.rs
···
1
+
2
+
use advent_core::{Day, day_stuff, ex_for_day};
3
+
4
+
pub struct Day9;
5
+
6
+
impl Day for Day9 {
7
+
8
+
day_stuff!(9, "", "");
9
+
10
+
fn part_1(_input: Self::Input) -> Option<String> {
11
+
None
12
+
}
13
+
14
+
fn part_2(_input: Self::Input) -> Option<String> {
15
+
None
16
+
}
17
+
}
+10
years/2025/src/examples/day_1/1.txt
+10
years/2025/src/examples/day_1/1.txt
+10
years/2025/src/examples/day_1/2.txt
+10
years/2025/src/examples/day_1/2.txt
years/2025/src/examples/day_10/1.txt
years/2025/src/examples/day_10/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_10/2.txt
years/2025/src/examples/day_10/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_11/1.txt
years/2025/src/examples/day_11/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_11/2.txt
years/2025/src/examples/day_11/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_12/1.txt
years/2025/src/examples/day_12/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_12/2.txt
years/2025/src/examples/day_12/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_13/1.txt
years/2025/src/examples/day_13/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_13/2.txt
years/2025/src/examples/day_13/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_14/1.txt
years/2025/src/examples/day_14/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_14/2.txt
years/2025/src/examples/day_14/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_15/1.txt
years/2025/src/examples/day_15/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_15/2.txt
years/2025/src/examples/day_15/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_16/1.txt
years/2025/src/examples/day_16/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_16/2.txt
years/2025/src/examples/day_16/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_17/1.txt
years/2025/src/examples/day_17/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_17/2.txt
years/2025/src/examples/day_17/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_18/1.txt
years/2025/src/examples/day_18/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_18/2.txt
years/2025/src/examples/day_18/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_19/1.txt
years/2025/src/examples/day_19/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_19/2.txt
years/2025/src/examples/day_19/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_2/1.txt
years/2025/src/examples/day_2/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_2/2.txt
years/2025/src/examples/day_2/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_20/1.txt
years/2025/src/examples/day_20/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_20/2.txt
years/2025/src/examples/day_20/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_21/1.txt
years/2025/src/examples/day_21/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_21/2.txt
years/2025/src/examples/day_21/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_22/1.txt
years/2025/src/examples/day_22/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_22/2.txt
years/2025/src/examples/day_22/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_23/1.txt
years/2025/src/examples/day_23/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_23/2.txt
years/2025/src/examples/day_23/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_24/1.txt
years/2025/src/examples/day_24/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_24/2.txt
years/2025/src/examples/day_24/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_25/1.txt
years/2025/src/examples/day_25/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_25/2.txt
years/2025/src/examples/day_25/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_3/1.txt
years/2025/src/examples/day_3/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_3/2.txt
years/2025/src/examples/day_3/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_4/1.txt
years/2025/src/examples/day_4/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_4/2.txt
years/2025/src/examples/day_4/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_5/1.txt
years/2025/src/examples/day_5/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_5/2.txt
years/2025/src/examples/day_5/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_6/1.txt
years/2025/src/examples/day_6/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_6/2.txt
years/2025/src/examples/day_6/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_7/1.txt
years/2025/src/examples/day_7/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_7/2.txt
years/2025/src/examples/day_7/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_8/1.txt
years/2025/src/examples/day_8/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_8/2.txt
years/2025/src/examples/day_8/2.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_9/1.txt
years/2025/src/examples/day_9/1.txt
This is a binary file and will not be displayed.
years/2025/src/examples/day_9/2.txt
years/2025/src/examples/day_9/2.txt
This is a binary file and will not be displayed.