Python:

a, b = map(int,input().split())
if a == b:
    print("nb")
else:
    print("wa")

参考答案：

#include<iostream>

using namespace std;

int main()
{
    int a, b;

    cin >> a >> b;
    if (a == b) cout << "nb" << endl;
    else cout << "wa" << endl;

    return 0;
}