Submission #1689167

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Source Code Expand

fn getline() -> String {
    let mut __ret = String::new();
    std::io::stdin().read_line(&mut __ret).ok();
    return __ret;
}

fn solve(s: i64, c: i64) -> i64 {
    if c <= 1 {
        return 0;
    }

    if s * 2 >= c {
        return c/2;
    }


    // s*2 < c の場合
    // s個は絶対作る。残りのパーツでできるだけsccを作る
    let ans = s + (c - s * 2) / 4;
    return ans;
}

fn main() {
    let s = getline();
    let vec: Vec<i64> = s.trim().split(' ').map(|s| s.parse().unwrap()).collect();
    let s = vec[0];
    let c = vec[1];

    let ans = solve(s, c);
    println!("{}", ans);
}

Submission Info

Judge Result