교육/알고리즘_기본
[스택]https://school.programmers.co.kr/learn/courses/30/lessons/12906https://www.acmicpc.net/problem/9012[큐]https://www.acmicpc.net/problem/10866https://www.acmicpc.net/problem/10845https://www.acmicpc.net/problem/2164[덱]https://www.acmicpc.net/problem/10866