Hi, I am getting TLE in case:9 on IARCS, the code is below, can anyone suggest correction or a better approach:
if __name__ == "__main__":n1, n2, n3 = [int(x) for x in raw_input().split()]elements = {}for i in range(n1+n2+n3):x = input()elements[x] = elements.get(x, 0)+1X = [x for x in elements.keys() if elements[x] > 1]print len(X)for x in sorted(X):print x
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