#include<bits/stdc++.h>
using namespace std;
int m,n,c,flag=0;
int a[30];
bool chk(){
	for(int i=1;i<=13;i++){
		if(a[i]>4){
			return 1;
		}
	}
	return 0;
}
void fi(){
	for(int i=3;i<=13;i++){
		if(a[i]==4){
			cout<<i<<endl;
			return;
		}
	}
	for(int i=2;i>=1;i--){
		if(a[i]==4){
			cout<<i<<endl;
			return;
		}
	}
	flag=1;
}
void work(){
	memset(a,0,sizeof(a));
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>c;
		a[c]++;
	}
	if(chk()){
		cout<<"cheat"<<endl;
		return;
	}
	fi();
	if(flag==1){
		cout<<"no bomb"<<endl;
	}
}
int main(){
	freopen("poker1.in","r",stdin);
	freopen("poker1.out","w",stdout);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>m;
	for(int z=1;z<=m;z++){
		work();
	}
	return 0;
}