[알고리즘] (구름level) 큐

문제
(구름level) 큐

Python 풀이

a = int(input())  # 횟수
b = []  # 백업

for i in range(a):
    s = input()  # 선택

    if s == 'e' or s == 'E':
        if len(b) < 10:
            n = int(input())  # 입력
            b.append(n)
        else:
            print('overflow')

    elif s == 'd' or s == 'D':
        if len(b) > 0:
            b.pop(0)
        else:
            print('underflow')
            
    else:
        break
				
t = ""

for k in b:
    t += str(k) + " "

print(t.strip())