#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  {
    string s;
    cin >> s;
    int n = s.size();
    int ans = 1e9;
    pair<int, int> path;
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < n; j++) {
        if (i == j) continue;
        if (s[i] == '0' && s[j] == '0' || s[i] == '2' && s[j] == '5' ||
            s[i] == '5' && s[j] == '0' || s[i] == '7' && s[j] == '5') {
          int dist = abs(n - 2 - i) + abs(n - 1 - j);
          if (j < i) {
            dist = 1 + (abs(n - 2 - j) + abs(n - 1 - i));
          }
          if (i == 0 || j == 0) {
            int zeros = 0;
            while (zeros + 1 < max(i, j) && s[zeros + 1] == '0')
              zeros++, dist++;
          }
          if (dist <= ans) {
            ans = dist;
            path = {i, j};
          }
        }
      }
    }
    if (ans == 1e9) ans = -1;
    cout << ans << endl;
  }
}
