#include <bits/stdc++.h>
using namespace std;
vector<int> diff = {0, -1, -2, 1, 0};
int main(){
  long long N;
  cin >> N;
  string S;
  while (N > 0){
    S += N % 5 + '0';
    N /= 5;
  }
  reverse(S.begin(), S.end());
  int M = S.size();
  vector<vector<vector<long long>>> dp(M + 1, vector<vector<long long>>(120, vector<long long>(2, 0)));
  dp[0][60][0] = 1;
  for (int i = 0; i < M; i++){
    for (int j = 0; j < 120; j++){
      for (int k = 0; k < 2; k++){
        if (dp[i][j][k]){
          for (int d = 0; d <= (k ? 4 : S[i] - '0'); d++){
            dp[i + 1][j + diff[d]][k || d < S[i] - '0'] += dp[i][j][k];
          }
        }
      }
    }
  }
  cout << dp[M][60][0] + dp[M][60][1] - 1 << endl;
}