http://acm.hdu.edu.cn/showproblem.php?pid=3951
#include <bits/stdc++.h> using namespace std; int t, n, k; int main() { //freopen("in","r",stdin); ios::sync_with_stdio(0); cin >> t; for (int i = 1; i <= t; i++) { cout << "Case " << i << ": "; cin >> n >> k; if (k == 1) { if (n & 1) cout << "first" << endl; else cout << "second" << endl; } else { if (n <= k) cout << "first" << endl; else cout << "second" << endl; } } return 0; }