[백준/파이썬] 10828번 스택

잘못된 예 import sys n = int(input()) result = [] for _ in range(n): data = list(input().split()) if data[0] in 'push': result.append(int(data[1])) elif data[0] in 'pop': if result: print(result.pop()) else: print(-1) elif data[0] in 'size': print(len(result)) elif data[0] in 'empty': if not result: print(1) else: print(0) elif data[0] in 'top': if result: print(result[-1]) else: print(-1) 처음에는 간단히 .....