#include<iostream>
#include<cstring>
#include<cstdio>
#include<algorithm>
using namespace std;
long long n;
long long m;
long long a[25];
long long t[25];
bool flag;
int main(){
    freopen("poker1.in","r",stdin);
    freopen("poker1.out","w",stdout);
    cin>>m;
    while(m--){
        flag=0;
        memset(a,0,sizeof(a));
        memset(t,0,sizeof(t));
        cin>>n;
        if(n<4){
            cout<<"no bomb"<<endl;
            continue;
        }
        for(int i=1;i<=n;i++){
            cin>>a[i];
            t[a[i]]++;
        }
        for(int i=3;i<=13;i++){
            if(t[i]==4){
                flag=1;
                cout<<i<<endl;
                break;
            }
            if(t[i]>4){
                flag=1;
                cout<<"cheat"<<endl;
            }
        }
        if(!flag){
            if(t[2]==4){
                cout<<2<<endl;
            }else
            if(t[1]==4){
                cout<<1<<endl;
            }else
            if(t[2]>4){
                cout<<"cheat"<<endl;
            }
            else
            if(t[1]>4){
                cout<<"cheat"<<endl;
            }else
            cout<<"no bomb"<<endl;
        }
    }
    return 0;
}