#include<bits/stdc++.h>
using namespace std;
using u64 = uint_least64_t;
using s64 = int_least64_t;
using ll = uint_least64_t;

int main(){
	string s ;
	cin >> s;

	if (s.size() > 4){
		s.erase(4);
	}
	cout << s << endl;
	return 0;
}