Submission #3043174

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Source Code Expand

use std::io::*;
use std::str::FromStr;

fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let token: String = stdin
        .bytes()
        .map(|c| c.expect("failed to read char") as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect();
    token.parse().ok().expect("failed to parse token")
}

fn main() {
    let a: i32 = read();
    let b: i32 = read();
    let c: i32 = read();
    let d: i32 = read();
    let start = std::cmp::max(a, c);
    let end = std::cmp::min(b, d);
    let ans = std::cmp::max(0, end - start);

    println!("{}", ans)
}

Submission Info

Judge Result