#include <iostream>

using namespace std;

istream& get_number( istream& is, int& n )
{
  while ( is && !isdigit( static_cast<unsigned char>( is.get() ) ) )
    ;
  is.unget();
  return is >> n;
}

int main()
{
  int n;
  while ( get_number( cin, n ) )
    cout << n << ' ';
}