#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
using namespace std;
template <class E>inline void read(E &e){
	e=0;char c=getchar();bool eh=0;
	while(c>'9'||c<'0'){if(c=='-')eh=1;c=getchar();}
	while(c>='0'&&c<='9'){e=e*10+c-48;c=getchar();}
	if(eh) e=-e;
}
int a[1000];
int num[1000];
int main(){
	freopen("poker1.in","r",stdin);
	freopen("poker1.out","w",stdout);
	int m;read(m);
	while(m--){
		memset(a,0,sizeof a);
		for(int i=3;i<=15;++i) num[i]=1;
		int n;
		read(n);
		for(int i=1;i<=n;++i){
			read(a[i]);
			if(a[i]==1) a[i]=15;
			else if(a[i]==2) a[i]=14;
		}
		sort(a+1,a+n+1);
		int k=1;
		for(int i=1;i<=n;++i)
			if(a[i]==a[i-1])
				num[a[i]]++;
		bool flag=0;
		for(int i=3;i<=15;++i){
			if(num[i]==1) continue;
			if(num[i]>4){
				printf("cheat\n");
				flag=1;
				break;
			}
		}
		if(flag) continue;
		for(int i=3;i<=15;++i){
			if(num[i]==4) {
				if(i==14) printf("2\n");
				else if(i==15) printf("1\n");
				else printf("%d\n",i);
				flag=1;
				break;
			}
		}
		if(!flag) printf("no bomb\n");
	}
	return 0;
}