#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int N;
  cin>>N;
  int sum = 0;
  vector<int> S(N);
  for(int i=0;i<N;i++){
      cin>>S[i];
      sum += S[i];
  }
  int ans = 0;
  for(int i=0;i<N;i++)if(sum/10 >= S[i]) ans+=30;
  cout<<ans<<endl;
}