#include <bits/stdc++.h>
typedef  long long ll;
#define INF 1000000000
using namespace std;
#define N 1000000
#define MOD 1000000007
int main(void){
    ll n;
    cin>>n;
    int num[10]={0};
    int nakami[10]={0};
    nakami[0]=1;
    nakami[4]=1;
    nakami[6]=1;
    nakami[9]=1;
    nakami[8]=2;
    int cnt=0;
    while(1){
        num[n%10]++;
        cnt++;
        n/=10;
        if(n==0)break;
    }
    int ans1=0;
    ans1+=cnt*2;
    int ana=0;
    for(int i=0;i<10;i++){
        ana+=num[i]*nakami[i];
    }
    ans1+=ana+1;
    int ans2=0;
    ans2+=cnt;
    ans2+=(1+ana)*2;
    cout<<min(ans1,ans2)<<endl;

}