#include <bits/stdc++.h>
using namespace std;
const int INF = 0x3f3f3f3f;
string s1, s2;
int ans = INF, len;
bool flag = false;
void solve(char a, char b) {
  s2 = s1;
  int n = len;
  int cnt = 0;
  int tmp = 0;
  for (int i = n - 1; i >= 0; i--) {
    if (s2[i] == b) {
      cnt++;
      for (int j = i; j < n - 1; ++j) {
        swap(s2[j], s2[j + 1]);
        tmp++;
      }
      break;
    }
  }
  for (int i = n - 2; i >= 0; i--) {
    if (s2[i] == a) {
      cnt++;
      for (int j = i; j < n - 2; j++) {
        swap(s2[j], s2[j + 1]);
        tmp++;
      }
      break;
    }
  }
  if (cnt == 2) {
    if (s2[0] != '0') {
      flag = true;
      ans = min(ans, tmp);
    } else {
      for (int i = 0; i < n - 2; ++i) {
        if (s2[i] != '0') {
          tmp += i;
          flag = true;
          ans = min(ans, tmp);
          break;
        }
      }
    }
  }
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> s1;
  len = s1.size();
  solve('0', '0');
  solve('2', '5');
  solve('5', '0');
  solve('7', '5');
  if (flag)
    cout << ans << endl;
  else
    cout << -1 << endl;
  return 0;
}
