#include<iostream>
#include<string>
#include<cstring>
#include<cmath>
#include<cstdio>
#include<cstdlib>
using namespace std;
char s[15];
int a[13]
int main()
{
freopen("poker1.in","r",stdin);
freopen("poker1.out","w",stdout);
	int m,n,i;
	scanf("%d",&m);

    for(i=1;i<=m;i++)
	{
		scanf("%d",&n);
		for(int j=1;j<=n;j++)
		{
				scanf("%c",s[j]);
				if(s[j]=='3') a[3]++;
				if(s[j]=='4') a[4]++;
				if(s[j]=='5') a[5]++;
				if(s[j]=='6') a[6]++;
				if(s[j]=='7') a[7]++;
				if(s[j]=='8') a[8]++;
				if(s[j]=='9') a[9]++;
				if(s[j]=='1') a[10]++;
				if(s[j]=='J') a[11]++;
				if(s[j]=='Q') a[12]++;
				if(s[j]=='K') a[13]++;
		}
		for(int i=3;i<=13;i++) 
		{
			if(a[i]>4) printf("cheat");
			return 0;
			
		}
		int temp=1;
			for( temp=3;temp<=13;temp++) 
		{
			if(a[temp]==4) 
			{
				printf("%d",temp);	break;
			}
		if(temp>13) printf("no bomb");
					
		}
			if(temp>13) printf("no bomb");
	
	}

	 return 0;
}