#2601 sumapatratecifre

#include <bits/stdc++.h>

using namespace std;


long long x;
int main()
{
  cin >> x;
  int sum = 0;
  while (x) {
    sum += (x % 10) * (x % 10);
    x /= 10;
  }
  cout << sum;
  return 0;
}