#include <stdio.h>

int main(void) {
	int i, N, C[101], sum, money;
	scanf("%d", &N);
	for(i = 1;i <= N;i++){
		scanf("%d", &C[i]);
		
	}
	sum = 0;
	for(i = 1;i <= N;i++){
		sum += C[i];
	}
	//printf("%d\n", sum);
	money = 0;
	for(i = 1;i <= N;i++){
		if(C[i] <= sum / 10)money += 30;
	}
	printf("%d\n", money);
	return 0;
}