Submission #3820932

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Source Code Expand

use std::io;

fn read_input() -> String {
    let mut s = String::new();
    io::stdin().read_line(&mut s);
    s
}

fn solve(s: String) {
    let r:i32 = s.trim().parse().unwrap();
    let ans = match r {
        0...1199 => "ABC",
        1200...2799 => "ARC",
        _ => "AGC"
    };
    println!("{}", ans);
}

fn main() {
    let s = read_input();
    solve(s);
}

Submission Info

Compile Error

warning: unused result which must be used, #[warn(unused_must_use)] on by default
 --> ./Main.rs:5:5
  |
5 |     io::stdin().read_line(&mut s);
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Judge Result