#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int,int> P; #define REP(i,n) for(ll i=0;i<ll(n);i++) int main(void){ cin.tie(nullptr); ios_base::sync_with_stdio(false); ll i,j; string S,T; cin >> S >> T; vector<string> a={"watermelon","beachball","shrinebell"}; vector<int> v(3,0); REP(i,3){ if(a[i]==S){ v[i]=1; } if(a[i]==T){ v[i]=1; } } REP(i,3){ if(v[i]==0) cout << a[i] << endl; } return 0; }