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::*;
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 tenki(s: String, t: String) -> u8 {
//    let mut ans = 0;
//    let sv :Vec<char> = s.chars().collect();
//    let tv :Vec<char> = t.chars().collect();
//    for i in 0..3 {
//        if sv[i] == tv[i] {
//            ans += 1;
//        }
//    }
//    ans
//}

fn main() {
    let a1: u8 = read();
    let a2: u8 = read();
    let a3: u8 = read();
    let ans;
    if a1 + a2 + a3 >= 22 {
        ans = "bust";
    } else {
        ans = "win";
    }
    
    println!("{}", ans);

}