package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

func main() {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	sc.Scan()
	N, _ := strconv.Atoi(sc.Text())
	a := make([]int, N)
	var total, t, m int
	for i := 0; i < N; i++ {
		sc.Scan()
		t, _ = strconv.Atoi(sc.Text())
		total += t
		a[i] = t
	}
	for i := range a {
		if a[i] <= total/10 {
			m += 30
		}
	}
	fmt.Println(m)
}