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: Wrong Answer)

fn main() {
    let mut line = String::new();
    std::io::stdin().read_line(&mut line).unwrap();
    println!("{}", line);

    // 読み込んだStringを空白で分解する
    let iter = line.split_whitespace();

    let mut sum = 0;
    for i in iter {
        let num: i32 = i.parse().unwrap();
        sum += num;
    }

    if sum >= 22 {
        println!("bust");
    } else {
        println!("win");
    }
}