#include <bits/stdc++.h>
using namespace std;
string input, temp;
const int MAXN = 999999;
int solve(char a, char b) {
  temp = input;
  bool number1, number2;
  number1 = number2 = false;
  int move = 0;
  for (int i = temp.size() - 1; i >= 0; i--) {
    if (temp[i] == b) {
      number1 = 1;
      for (int j = i; j < temp.size() - 1; j++) {
        swap(temp[j], temp[j + 1]);
        move++;
      }
      break;
    }
  }
  for (int i = temp.size() - 2; i >= 0; i--) {
    if (temp[i] == a) {
      number2 = 1;
      for (int j = i; j < temp.size() - 2; j++) {
        swap(temp[j], temp[j + 1]);
        move++;
      }
      break;
    }
  }
  if (!number1 || !number2) return MAXN;
  if (temp[0] == '0') {
    for (int i = 1; i < temp.size() - 2; i++) {
      if (temp[i] != '0') {
        move += i;
        break;
      }
    }
  }
  return move;
}
int main() {
  cin >> input;
  int answer = MAXN;
  answer = min(answer, solve('2', '5'));
  answer = min(answer, solve('5', '0'));
  answer = min(answer, solve('7', '5'));
  answer = min(answer, solve('0', '0'));
  if (answer == MAXN)
    cout << "-1" << endl;
  else
    cout << answer << endl;
  return 0;
}
