feat: add solutions to lc problem: No.1726

[ifmagic]

No.1726.Tuple with Same Product

[yanglbme]

Python 有较为简洁的写法：

class Solution:
    def tupleSameProduct(self, nums: List[int]) -> int:
        cnt = defaultdict(int)
        for i in range(1, len(nums)):
            for j in range(i):
                x = nums[i] * nums[j]
                cnt[x] += 1
        return sum(v * (v - 1) // 2 for v in cnt.values()) << 3

我稍微改一下