#include <iostream>
using namespace std;
int main()
{
 freopen("poker1.in","r",stdin);
 freopen("poker1.out","w",stdout);
 int M,N,i=1,j=1,a[110][14]={},b,min;
 cin>>M;
 while(i<=M)
 {
  cin>>N;
  j=1;
  while(j<=N)
  {
   cin>>b;
   if(b==1)
   a[i][1]=a[i][1]+1;else
   if(b==2)
   a[i][2]=a[i][2]+1;else
   if(b==13)
   a[i][3]=a[i][3]+1;else
   if(b==12)
   a[i][4]=a[i][4]+1;else
   if(b==11)
   a[i][5]=a[i][5]+1;else
   if(b==10)
   a[i][6]=a[i][6]+1;else
   if(b==9)
   a[i][7]=a[i][7]+1;else
   if(b==8)
   a[i][8]=a[i][8]+1;else
   if(b==7)
   a[i][9]=a[i][9]+1;else
   if(b==6)
   a[i][10]=a[i][10]+1;else
   if(b==5)
   a[i][11]=a[i][11]+1;else
   if(b==4)
   a[i][12]=a[i][12]+1;else
   if(b==3)
   a[i][13]=a[i][13]+1;
   j=j+1;
  }
  i=i+1;
 }
 i=1;j=1;
 while(i<=M)
 {
  j=1;
  min=0;
  while(j<=13)
  {
   if(a[i][j]==4&&j>min)
   min=j;   
   if(a[i][j]>4)
   {
    cout<<"cheat"<<endl;
    break;
   }
   j=j+1;
   if(j==14)
   {
    if(min==0)
    cout<<"no bomb"<<endl;
    else
    cout<<min<<endl;
   }
  }
  i=i+1;
 }
 return 0;
}