Bittijono

input/code.cpp: In function 'std::string b(int)':
input/code.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

#include <iostream>
#include <string>


std::string b(int x) {
  switch (x) {
  case 1:
    return "1";
  case 2:
    return "11";
  case 3:
    return "10";
  case 4:
    return "1111";
  case 5:
    return "100";
  case 6:
    return "101";
  case 7:
    return "1000";
  case 8:
    return "1100";
  case 9:
    return "1001";
  case 10:
    return "1111111111";
  }
}


int main() {
  int x;
  std::cin >> x;

  std::cout << b(x) << '\n';

  return 0;
}