摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc221_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc221/tasks/abc221_g "AtCoder 传送门") 这个数据范围让我们 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/CF1841C "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1841/C "CF 传送门") 先反转 $s$ 串,然后考虑 dp,设 $f_{ 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc275_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc275/tasks/abc275_g "AtCoder 传送门") 原问题等价于: > 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc253_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc253/tasks/abc253_h "AtCoder 传送门") 没做出来。 考虑求 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc298_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc298/tasks/abc298_h "AtCoder 传送门") 挺无脑的。是不是因 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc251_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc251/tasks/abc251_g "AtCoder 传送门") 经典结论,一个点 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc220_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc220/tasks/abc220_g "AtCoder 传送门") 简单题。 首先肯定 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc227_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc227/tasks/abc227_e "AtCoder 传送门") 感觉是很裸的题。 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc249_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc249/tasks/abc249_g "AtCoder 传送门") 好题。 套路地,考 阅读全文
摘要:
[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc219_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc219/tasks/abc219_h "AtCoder 传送门") 套路化了。 比较显 阅读全文