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  • tiagoiesbick
    4 months ago+ 0 comments

    Python 3

    def gemstones(arr):    
        dict_ans = {}
        counter = 0
        for i in arr:
            for j in set(i):
                dict_ans[j] = (dict_ans.get(j) or 0) + 1
                if dict_ans[j] == len(arr):
                    counter += 1
        return counter
    
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