#include<bits/stdc++.h>
using namespace std;
int t,a[20]; 
void init(){
	scanf("%d",&t);
} 

void run(){
	int n;
	for(int p=1;p<=t;p++){
		bool ok=false;
		memset(a,0,sizeof(a));
		scanf("%d",&n);
		for(int i=1;i<=n;i++){
		int q;
		scanf("%d",&q),a[q]++;	
		if(a[q]>4){
			printf("cheat\n");ok=true;break; 
		} 
		}	
		if(ok) continue;
		for(int i=3;i<=13;i++){
			if(a[i]==4){
				printf("%d\n",i);ok=true; break;
			}
		}
		if(ok) continue;
		for(int i=2;i>=1;i--){
			if(a[i]==4){
				printf("%d\n",i);ok=true; break;
			}
		}
		if(ok) continue;
		printf("no bomb\n");
	}
}
int main(){
	freopen("poker1.in","r",stdin);
	freopen("poker1.out","w",stdout); 
	
	init();
	
	run();
	
	return 0;
}