#include "bits/stdc++.h"
using namespace std;
     
#define DEBUG(x) cout<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cout<<#v<<":";for(int i=0;i<v.size();i++) cout<<" "<<v[i]; cout<<endl
     
typedef long long ll;
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll, ll>
const int inf = 1000000001;
const ll INF = 1e18;
#define MOD 1000000007
#define mod 1000000009
#define pi 3.14159265358979323846
#define Sp(p) cout<<setprecision(15)<<fixed<<p<<endl;
int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 };
int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };


int main() {
  int i, j;
  string n;
  cin >> n;
  vi mai = {0, 1, 2, 3, 2, 1, 2, 3, 3, 2, 1};
  mai[10] = 1;
  vll dp(n.size(), vl(2, inf));
  dp[0][0] = mai[n[0] - '0'];
  dp[0][1] = mai[n[0] - '0' + 1];
  for (i = 1; i < n.size(); i++) {
    dp[i][0] = min(dp[i - 1][0] + mai[n[i] - '0'], dp[i - 1][1] + mai[10 - (n[i] - '0')]);
    dp[i][1] = min(dp[i - 1][0] + mai[n[i] - '0' + 1], dp[i - 1][1] + mai[10 - (n[i] + 1- '0')]);
  }

  /*
  for (j = 0; j < 2; j++) {
    for (i = 0; i < n.size(); i++) {
      cout << dp[i][j] << " ";
    }
    cout <<endl;
  }
  */
  
  cout << dp[n.size() - 1][0] << endl;
}