#include<bits/stdc++.h>
using namespace std;
int m,n,pai[20],shu[16];bool flag=0;
int main()
{
	freopen("poker1.in","r",stdin);
    freopen("poker1.out","w",stdout);
	scanf("%d",&m);
	while(m>0)
	{	
		m--;
		memset(pai,0,sizeof(pai));memset(shu,0,sizeof(shu));
		scanf("%d",&n);
		for(int i=1;i<=n;++i)
		{
				scanf("%d",&pai[i]);
				shu[pai[i]]+=1;
				if(shu[pai[i]]>4&&flag==0){cout<<"cheat"<<"\n";flag=1;}
		}
		if(flag==0)
		{
			for(int i=2;i<=13;++i)
			{
				if(shu[i]==4){cout<<i<<"\n";flag=1;}
			}
			if(flag==0&&shu[1]==4){
				cout<<"1"<<"\n";flag=1;
			}
			if(flag==0)
			cout<<"no bomb"<<"\n";
		}
		flag=0;
	}
	return 0;
}