#include<bits/stdc++.h>
using namespace std;
int t,n,a[15];
int main(){
	freopen("poker1.in","r",stdin);
	freopen("poker1.out","w",stdout);
	scanf("%d",&t);
	while(t--){
		memset(a,0,sizeof a);
		bool f=0;int ans=-1;
		scanf("%d",&n);
		for(int i=1;i<=n;++i){
			int b;
			scanf("%d",&b);
			a[b]++;
			if(a[b]>4)f=1;
		} if(f){
			printf("cheat\n");
			continue;
		}
		for(int i=3;i<=13;++i){
			if(a[i]==4){
				ans=i;
				break;
			}
		} if(ans==-1){
			for(int i=2;i>=1;--i){
				if(a[i]==4){
					ans=i;
					break;
				}
			}
		} if(ans==-1){
			printf("no bomb\n");
			continue;
		} else {
			printf("%d\n",ans);
			continue;
		}
	}
	return 0;
}