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LeetCode 2470. Number of Subarrays With LCM Equal to K

周賽319。相似題2447. number of subarrays with gcd equal to k。 比賽時忘記python內建有lcm函數,自己寫了奇怪的判斷有通過,後來被rejudge掉,真是死的莫名其妙。