47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
const TRIANGLE: &str =
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"75
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95 64
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17 47 82
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18 35 87 10
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20 04 82 47 65
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19 01 23 75 03 34
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88 02 77 73 07 63 67
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99 65 04 28 06 16 70 92
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41 41 26 56 83 40 80 70 33
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41 48 72 33 47 32 37 16 94 29
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53 71 44 65 25 43 91 52 97 51 14
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70 11 33 28 77 73 17 78 39 68 17 57
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91 71 52 38 17 14 91 43 58 50 27 29 48
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63 66 04 68 89 53 67 30 73 16 69 87 40 31
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04 62 98 27 23 09 70 98 73 93 38 53 60 04 23";
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fn main() {
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let triangle_one: Vec<&str> = TRIANGLE.split("\n").collect();
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let mut triangle_two: Vec<Vec<u32>> = vec![];
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for i in triangle_one {
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triangle_two.push(
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i.split(' ')
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.filter_map(|s| s.parse::<u32>().ok())
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.collect());
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}
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let mut sums: Vec<u32> = vec![];
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let mut current_index: u32 = 0;
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sums.push(triangle_two[0][0]);
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triangle_two.remove(0);
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for i in triangle_two {
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let compare = vec![i[current_index as usize], i[(current_index+1) as usize]];
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let maximum = *compare.iter().max().unwrap();
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if maximum == compare[1] {
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current_index += 1;
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}
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sums.push(maximum);
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}
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println!("{}", sums.iter().sum::<u32>());
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}
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