[ABC263]LINE Verda プログラミングコンテスト（AtCoder Beginner Contest 263） A～C問題Python解説

A問題A, B, C, D, E = list(map(int, input().split()))card = [A, B, C, D, E]a = card.count(A)b = card.count(B)c = card.count(C)d = card.count(D)e = card.count(E)# print(set([a,b,c,d,e]))if set([a,b,c,d,e]