최소직사각형 https://school.programmers.co.kr/learn/courses/30/lessons/86491
카드 뭉치 https://school.programmers.co.kr/learn/courses/30/lessons/159994
튜플 https://school.programmers.co.kr/learn/courses/30/lessons/64065
N-Queen https://school.programmers.co.kr/learn/courses/30/lessons/12952
