Solution -「洛谷 P6287」「COCI 2016-2017」Mag
DescriptionLink.定义一条链的价值为链上点权乘积除以节链上点数，求一条价值最小的链。Solution结论：答案链上最多包含一个 $2$（其余全为 $1$），并且不在链的两端点。证明...
Solution -「洛谷 P3773」「CTSC 2017」吉夫特
DescriptionLink.求满足$$\prod _{i=2}^{k} \binom{a_{b_{i-1}}}{a_{b_i}} \mod 2 = \binom{a_{b_1}}{a_{b_...
Solution -「SP 106」BINSTIRL
DescriptionLink.求 $\begin{Bmatrix}n \\ m\end{Bmatrix}\bmod2$Solution求$$
\begin{aligned}
\begin{Bm...
Record - Nov. 21st, 2020 - Exam. REC & SOL
CraftProb. 1Desc. & Link.有想法。printf( "nan" );Prob.2Desc. & Link.没读懂Prob. 3Desc. & Link....
Record - Nov. 20th, 2020 - Exam. SOL
LOC 2020.11.20 - Prob. 1Desc. & Link.$C=2^{k}\bmod(a+b+c)$#include <cstdio>
typedef long l...