https://codeforces.com/contest/1995/problem/C
https://www.luogu.com.cn/problem/P6465
https://www.luogu.com.cn/problem/P5587
https://www.luogu.com.cn/problem/P4447
Codeforces Round 410 (Div. 2) C 题
Codeforces Round 938 (Div. 3) D 题
Codeforces Round 938 (Div. 3) F 题
Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT B 题
2024-02-21牛客寒假算法基础集训营5 M题
2024-02-19牛客寒假算法基础集训营4 E题
2024-02-03CCNU寒假周赛C题
P1088 [NOIP2004 普及组] 火星人 - 洛谷 | 计算机科学教育新生态 (luogu.com.cn)
