21 lines
782 B
Rust
21 lines
782 B
Rust
use std::collections::HashSet;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let lines: Vec<String> = std::io::stdin().lines().map(|x| x.unwrap()).collect();
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let mut result = 0;
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for window in lines.chunks(3) {
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let a: HashSet<char> = (window[0]).chars().collect();
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let b: HashSet<char> = (window[1]).chars().collect();
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let c: HashSet<char> = (window[2]).chars().collect();
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let d: HashSet<char> = a.intersection(&b).map(|x| *x).collect();
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let mut e = d.intersection(&c);
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result += match *e.next().unwrap() {
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w @ 'a'..='z' => (w as u32) - ('a' as u32) + 1,
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w @ 'A'..='Z' => (w as u32) - ('A' as u32) + 27,
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_ => todo!(),
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};
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}
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println!("{:?}", result);
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Ok(())
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}
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