#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  string s, t;
  cin >> s >> t;
  set<string> st = { "watermelon", "beachball", "shrinebell" };
  st.erase(s), st.erase(t);
  assert(st.size() == 1);
  cout << *st.begin() << endl;
  return 0;
}