#include <stdio.h> int main(void) { int num; int money[100]; int ave = 0; int pay = 0; int i; scanf("%d", &num); for (i=0; i<num; i++) { scanf("%d ", &money[i]); ave += money[i]; } ave /= 10; for (i=0; i<num; i++) { if (money[i] <= ave) { pay += 30; } } printf("%d\n", pay); return 0; }