#include <bits/stdc++.h>
using namespace std;


int main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	int a, b;
	cin >> a >> b;
	if(a > b) cout << "CS452\n";
	if(b > a) cout << "PHIL145\n";

	
	return 0;
  }