#include<stdio.h>
int main()
{
    double x,y;
    scanf("%lf%lf",&x,&y);
    if((x>=60.0&&y<60.0)||(x<60.0&&y>=60.0))
        printf("green");
    else
        printf("red");
        return 0;
}
/**************************************************************
	Problem: 1658
	User: admin
	Language: C
	Result: Accepted
	Time:23 ms
	Memory:1144 kb
****************************************************************/