#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  string ans = "";
  string s = "9999";
  for(int i=0;i<5;i++){
      int N;
      cin>>N;
      if(N%3 == 0) ans += s;
      if(N%5 == 0) ans += s;
      if(N%3 && N%5) ans += to_string(N);
  }
  cout<<ans.size()<<endl;
}