#include <bits/stdc++.h>
#include <cstdio>
#include <cstdlib>
using namespace std;

int main() {
	int n,sum=0,val=0;
	int a[100000];
	scanf("%d",&n);
	for(int i=0;i<n;i++){
		scanf("%d",&a[i]);
		sum=sum+a[i];
	}
	int divisom =0;
	divisom=sum/10;
	for(int i=0;i<n;i++){
		if(divisom>=a[i]){val=val+30;}else{val=val+0;}
	}
	printf("%d",val);
	
	return 0;
}