ABC147A - Blackjack

問題：A - Blackjack

#include <iostream>
using namespace std;

int main(void) {
    int a1, a2, a3;

    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> a1 >> a2 >> a3;
    cout << (a1 + a2 + a3 <= 21? "win" : "bust") << "\n";
    return 0;
}