#include <cstdio>
#include <cstring>
using namespace std;
int m=0,n=0;
int poker[14]={0};
int main()
{
	freopen("poker1.in","r",stdin);
	freopen("poker1.out","w",stdout);
	scanf("%d",&m);
	while(m--)
	{
		memset(poker,0,sizeof(poker));
		scanf("%d",&n);
		for(int i=1;i<=n;i++)
		{
			int a;
			scanf("%d",&a);
			poker[a]++;
		}
		for(int i=1;i<=13;i++)
			if(poker[i]>4)
			{
				puts("cheat");
				goto there;
			}
		for(int i=3;i<=13;i++)
			if(poker[i]==4)
			{
				printf("%d\n",i);
				goto there;
			}
		for(int i=2;i>=1;i--)
			if(poker[i]==4)
			{
				printf("%d\n",i);
				goto there;
			}
		puts("no bomb");
		there:;
	}
	return 0;
}