#!/usr/bin/python
from fractions import Fraction
from operator import mul
from itertools import izip, tee

def pairwise(iterable):
    a, b = tee(iterable)
    next(b, None)
    return izip(a, b)

raw_input()
print reduce(mul, map(lambda (x, y): Fraction(y, x), pairwise(map(int, raw_input().split()))))