#include <iostream>
#include <string>
#include <vector>

typedef long long ll;

void print() { std::cout << std::endl; }
template<typename H> void print(H head) { std::cout << head << std::endl; }
template<typename H, typename... T> void print(H head, T... tail) { print(head); print(tail...); }

int main(int argc, char* argv[])
{
  ll N;
  std::cin >> N;

  print(N * 10);

  return 0;
}