import math
from functools import reduce

def lcm_base(x, y):
    return (x * y) // math.gcd(x, y)

def lcm_list(a):
    return reduce(lcm_base, a)
if __name__ == '__main__':
	N = int(input())
	a = list(map(int, input().split()))
	ans = 0
	num = lcm_list(a) - 1
	print(num)
	for i in range(len(a)):
		ans += num % a[i]
	print(ans)