17641 백준-1764번(듣보잡)-python3 import sys a,b=map(int,sys.stdin.readline().split()) not_listen=set() not_see=set() for i in range(a): not_listen.add(sys.stdin.readline().strip()) for i in range(b): not_see.add(sys.stdin.readline().strip()) not_ls=sorted(list((not_listen)&(not_see))) print(not_ls) print(len(not_ls)) for a in not_ls: print(a) 2023. 11. 24. 이전 1 다음