- 백준 13023
https://www.acmicpc.net/problem/13023 - 백준 11724
https://www.acmicpc.net/problem/11724 - 백준 15649
https://www.acmicpc.net/problem/15649 - 백준 9095
https://www.acmicpc.net/problem/9095 - 프로그래머스 메뉴 리뉴얼(카카오)
https://school.programmers.co.kr/learn/courses/30/lessons/72411 - 백준 14888
https://www.acmicpc.net/problem/14888 - 백준 10799
https://www.acmicpc.net/problem/10799
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