#include <bits/stdc++.h>
using namespace std;

int main() {
  string S;
  cin >> S;
  if (S == "0") {
    cout << 0 << "\n";
    return 0;
  }
  S += '0';
  for (int i = 0; i < S.size(); i++) {
    if (S.at(i) == '-') cout << '-';
    else cout << (int)S.at(i) - '0';
  }
  cout << "\n";
}