#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  vector<int> v;
  int n;
  cin >> n;
  if (n == 0)
    v.push_back(0);
  else {
    while (n) {
      v.push_back(n % 10);
      n /= 10;
    }
  }

  int space[10] = {1, 0, 0, 0, 1, 0, 1, 0, 2, 1};

  int r1 = 1, r2 = 2;
  for (int x: v) {
    r1 += 2;              // b -> r -> w
    r1 += space[x];       // w -> b
    ++r2;                 // b -> w
    r2 += 2 * space[x];   // w -> r -> b
  }
  
  cout << min(r1, r2) << endl;
  
  return 0;
}