#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{
	char c;

	while (cin.get(c)) {   //while (cin.get(c).operator void *()) {
		cout.put(c);
	}

	return cin.rdstate() == (ios_base::eofbit | ios_base::failbit)
		? EXIT_SUCCESS : EXIT_FAILURE;
}