module main

import os

fn read_stdin() string {
	  mut line := ''
	  mut inputstr := ''
	  for {
		    line = os.get_line()
		    if line.len == 0 && os.stdin().eof() {
			      break
		    }
		    line = line.trim_space()
		    inputstr += line
	  }
	  return inputstr
}

fn main() {
	  var := read_stdin()
	  println(var)
}