#include <bits/stdc++.h>
using namespace std;

int main(){
  string s,t;cin>>s>>t;
  if(s>t)swap(s,t);
  if(s=="beachball"&&t=="watermelon")cout<<"shrinebell\n";
  else if(s=="shrinebell"&&t=="watermelon")cout<<"beachball\n";
  else cout<<"watermelon\n";
}