#include <iostream>
#include <stdlib.h>
using namespace std;
int main() {
int times;
int remainingTime;
cout<<"Input time (minute):"<<endl;
cin>>times;
remainingTime=times;
char Color;
for(int i=0;i<times;i++)
{
if(remainingTime>=3)
{
remainingTime=remainingTime-3;
Color='G';
}
if(remainingTime>=2)
{
remainingTime=remainingTime-2;
Color='R';
}
}
cout<<"Last color :"<<Color<<endl;
return 0;
}