Description You are given three n × n matrices A, B and C. Does the equation A × B = C hold true? Input The first line of input contains a positive integer n (n ≤ 500) followed by the the three matrices A, B and C respectively. Each matrix's descript…
传送门 根据国家集训队2014论文集中胡泽聪的随机化算法可以通过这道题. 对于每个数,它有12" role="presentation" style="position: relative;">1212的概率在最后的答案序列中,这样我们每次随机出序列中的一个数,然后看它的因子有没有符合条件的更新答案就行了. 代码: #include<bits/stdc++.h> #define ll long long #define N 1000005…
题目链接:Fruit Ninja 比赛链接:2018 ACM 国际大学生程序设计竞赛上海大都会赛重现赛 题目描述 Fruit Ninja is a juicy action game enjoyed by millions of players around the world, with squishy, splat and satisfying fruit carnage! Become the ultimate bringer of sweet, tasty destruction wit…