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

int main()
{
    int t;
    cin >>t;
    while(t--){
        long int x,y,a[101],n,to=0,cp=0;
        cin>>n>>x>>y;
        for(int i=0;i<n;i++){
            cin>>a[i];
            to+=a[i];
        }
        cp=cp+x;
        for(int i=0;i<n;i++){
            if((a[i]-y)<=0){
                a[i]=0;
            }else{
                a[i]=a[i]-y;
            }
            cp+=a[i];
        }
       // cout<<to<<" "<<cp<<endl;
        if(cp<to){
            cout<<"COUPON"<<endl;
        }else{
            cout<<"NO COUPON"<<endl;
        }
        to=0;
        cp=0;
    }
	
	return 0;
}