#include <bits/stdc++.h>
using namespace std;
int t,n;
int s[30],l[30] = {0,3,4,5,6,7,8,9,10,11,12,13,2,1};
int main(){
    freopen("poker1.in","r",stdin);
    freopen("poker1.out","w",stdout);
    scanf("%d",&t);
    while(t--){
        memset(s,0,sizeof(s));
        scanf("%d",&n);
        for(int i = 1;i <= n;i++){
            int x;scanf("%d",&x);
            s[x]++;
        }
        bool f = 1;
        for(int i = 1;i <= 13;i++)
            if(s[l[i]] > 4){printf("cheat\n");f = 0;break;}
        if(f == 0)continue;
        for(int i = 1;i <= 13;i++)
            if(s[l[i]] == 4){printf("%d\n",l[i]);f = 0;break;}
        if(f)printf("no bomb\n");
    }
    
    return 0;
    
}