#include <iostream>
using namespace std;
int main() {
    double weight1, weight2;
    cin >> weight1 >> weight2;
    if ((weight1 >= 60 && weight2 < 60) || (weight1 < 60 && weight2 >= 60)) {
        cout << "green" << endl;
    } else {
        cout << "red" << endl;
    }
    return 0;
}

/**************************************************************
	Problem: 1658
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:18 ms
	Memory:2072 kb
****************************************************************/