#include <bits/stdc++.h>
#define INF 990000000
//33
using namespace std;

int main() {
int n;

int res=0;

for(int i=0;i<5;i++){
cin>>n;
if(n%3==0 && n%5==0)res+=8;
else if(n%3==0)res+=4;
else if(n%5==0)res+=4;
else res+=(log10(n)+1);

}

cout << res<<endl;


}