#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main(){
  ofstream valja("ruudud.txt");
  for(int i=1; i<=10; i++){
    valja << i*i << endl;
  }
  ifstream sisse("ruudud.txt");
  string s;
  while(getline(sisse, s)){
    cout << s << endl;
  }
}