color这道题我一直80分，求助大佬

#include<bits/stdc++.h>
using namespace std;
int main(){
	int G, B, Gr, O, R;
	cin >> G >> B >> Gr >> O >> R;
	if( (G + B + Gr + O + R) < 100 )
	cout << "Grey";
	else if( (G + B + Gr + O + R) < 119 )
	cout << "Blue";
	else if( (G + B + Gr + O + R) < 169)
	cout << "Green";
	else if( (G + B + Gr + O + R) < 229 )
	cout << "Orange";
	else if( (G + B + Gr + O + R) < 500 )
	cout << "Red";
	else cout << 'a';
}