#include <iostream>
#include<bits/stdc++.h>
#define ll long long
using namespace std;

int main() {
string s;
cin>>s;
int len =s.size();
for(int i = 0 ;i<len ;i++)
{
    if(s[i]== 'u' && s[i+1]=='s' && s[i+2]=='e' && s[i+3]=='r' && s[i+4]=='n' && s[i+5]=='a' && s[i+5]=='m' && s[i+6]=='e')
    {
        i+=8;
        if (s[i]=='&')
        break;
        else
        cout<<s[i]<<endl;

    }

}
return 0;
}