29 lines
503 B
Rust
29 lines
503 B
Rust
#![feature(test)]
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type Input = Vec<i32>;
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fn setup(input: &str) -> Input {
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input
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.bytes()
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.map(|b| (b == b'(') as i32 - (b == b')') as i32)
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.filter(|&b| b != 0)
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.collect()
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}
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fn part1(input: &Input) -> i32 {
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input.iter().sum()
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}
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fn part2(input: &Input) -> usize {
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input
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.iter()
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.scan(0, |acc, x| {
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*acc += *x;
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Some(*acc)
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})
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.position(|x| x == -1)
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.unwrap()
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+ 1
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}
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aoc::main!(2015, 1);
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