#include <iostream>
using namespace std;

// copy stdin to stdout

// description of cin functions @ http://www.cplusplus.com/ref/iostream/istream/

int main() {

  do {

    char c = cin.get();      // get one character from stdin
    
    if (!cin.good()) break;  // exit loop if error or end-of-file

    cout << c;               // if good, append c to stdout

  } while (true);            // continue forever

}