백준 3009 네 번째 점 in python https://www.acmicpc.net/problem/3009 코드 1234x=[0 for i in range(3)];y=[0 for i in range(3)]for i in range(3): x[i], y[i] = map(int, input().split())print(x[0] if x.count(x[0])==1 else x[1] if x.count(x[1])==1 else x[2], y[0] if y.count(y[0])==1 else y[1] if y.count(y[1])==1 else y[2])cs