Solution -「CF 392C」Yet Another Number Sequence
DescriptionLink.求 $\sum_{i=1}^{n}\text{fibonacci}_{i}\times i^{k}=\sum_{i=1}^{n}(F_{i-1}+\text{fi...
Solution -「YunoOI 2007」rfplca
DescriptionLink.Given is a rooted tree with the $\sf1$-th node as the root.The tree will be given...
Solution -「YunoOI 2016」镜中的昆虫
DescriptionLink.区间推平；区间数颜色。Solution考虑无修的情况，我们是采用维护每个数的 $pre$ 来做的。具体一点就是对于每一个 $a_{i}$ 维护 $pre_{i}=...
Solution Set -「ABC 197」
「ABC 197A」RotateLink.略。#include<bits/stdc++.h>
using namespace std;
int main(){
char a,...
Solution Set -「ABC 196」
「ABC 196A」Difference MaxLink.略。#include<cstdio>
long long a,b,c,d;
int main(){
scanf(&q...