# -*- coding: utf-8 -*-
import sys
from functools import reduce

# ----------------------------------------------------------------
# Use Solve Function

def solve(lines):
    N = int(lines.pop(0))
    A = list(map(int, lines.pop(0).split(' ')))
    lcd = 10
    m = lcd - 1
    A = [ m % i for i in A ]
    print(sum(A))

lines = [x.strip() for x in sys.stdin.readlines()]

#
# solve !!
#
solve(lines)