62 lines
2.0 KiB
Plaintext
62 lines
2.0 KiB
Plaintext
func check[lines: array, x: i64, y: i64, dx: i64, dy: i64] : bool
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if x + dx * 3 < 0 | x + dx * 3 >= array.size(lines) | y + dy * 3 < 0 | y + dy * 3 >= str.len(array.nth(lines, 0))
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return false
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if array.nth(lines, x)[y] != 'X'
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return false
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if array.nth(lines, x + dx)[y + dy] != 'M'
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return false
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if array.nth(lines, x + dx * 2)[y + dy * 2] != 'A'
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return false
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if array.nth(lines, x + dx * 3)[y + dy * 3] != 'S'
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return false
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return true
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func part1[lines: array] : void
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let out = 0
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for x in 0..array.size(lines)
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for y in 0..str.len(array.nth(lines, x))
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if check(lines, x, y, 0, 1)
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out = out + 1
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if check(lines, x, y, 0, -1)
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out = out + 1
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if check(lines, x, y, 1, 0)
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out = out + 1
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if check(lines, x, y, -1, 0)
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out = out + 1
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if check(lines, x, y, 1, 1)
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out = out + 1
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if check(lines, x, y, -1, -1)
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out = out + 1
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if check(lines, x, y, 1, -1)
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out = out + 1
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if check(lines, x, y, -1, 1)
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out = out + 1
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io.println_i64(out)
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func part2[lines: array] : void
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let out = 0
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for x in 1..array.size(lines)-1
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for y in 1..str.len(array.nth(lines, x))-1
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if array.nth(lines, x)[y] == 'A'
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let s: str = mem.alloc(5)
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str.set(s, 0, array.nth(lines, x - 1)[y - 1])
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str.set(s, 1, array.nth(lines, x + 1)[y - 1])
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str.set(s, 2, array.nth(lines, x + 1)[y + 1])
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str.set(s, 3, array.nth(lines, x - 1)[y + 1])
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str.set(s, 4, 0)
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if str.equal(s, "MSSM") | str.equal(s, "SMMS") | str.equal(s, "MMSS") | str.equal(s, "SSMM")
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out = out + 1
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io.println_i64(out)
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func main[] : i64
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let lines: array = io.read_file("input.txt") |> str.split("\n")
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part1(lines)
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part2(lines) |