ABC100A - Happy Birthday!

問題：A - Happy Birthday!

#include <iostream>
using namespace std;
 
int main(void) {
    int a, b;
 
    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> a >> b;
    cout << (a <= 8 && b <= 8? "Yay!" : ":(") << "\n";
    return 0;
}

"\n;で提出し、1CE。。