"""
출처:프로그래머스,
https://school.programmers.co.kr/learn/courses/30/lessons/12953
"""

# 풀이 과정
def solution(arr):
    result = 2

    for a in arr:
        if result != 1 and result % a == 0:
            continue

        else:
            count = min(a, result)

            while count > 1:
                if result % count == 0 and a % count == 0:
                    break
                else:
                    count -= 1

            result = (a * result) // count

    return result