#include <iostream>
#define ll long long
using namespace std;

int main(){
    string a,b;
    cin >> a >> b;
    if(a == "beachball" &&  b == "watermelon"){
        cout << "shrinebell" << endl;
    }else if(a == "shrinebell" && b == "beachball"){
        cout << "watermelon" << endl;
    }else if(a == "shrinebell" && b == "watermelon"){
        cout << "beachball" << endl;
    }
}