Problem:
Score : 100 points

Problem Statement

Given are three integers A_1, A_2, and A_3.

If A_1+A_2+A_3 is greater than or equal to 22, print bust; otherwise, print win.

Constraints

1 \leq A_i \leq 13 \ \ (i=1,2,3)

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A_1 A_2 A_3

Output

If A_1+A_2+A_3 is greater than or equal to 22, print bust; otherwise, print win.

Sample Input 1

5 7 9

Sample Output 1

win

5+7+9=21, so print win.

Sample Input 2

13 7 2

Sample Output 2

bust

13+7+2=22, so print bust.

Solution in Rust (1.15.1) (judge verdict: Accepted)

use std::io;

fn main() {
    let line = parse_line::<String>();
    let mut sp = line.split_whitespace();
    let a1 = sp.next().unwrap().parse::<u32>().unwrap();
    let a2 = sp.next().unwrap().parse::<u32>().unwrap();
    let a3 = sp.next().unwrap().parse::<u32>().unwrap();
    if a1 + a2 + a3 <= 21 {
        println!("win");
    } else {
        println!("bust");
    }
}

fn parse_line<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}