E. Copying Data time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output We often have to copy large volumes of information. Such operation can take up many computer resources. Therefore, in this p…
题目链接: http://codeforces.com/problemset/problem/292/E E. Copying Data time limit per test2 secondsmemory limit per test256 megabytes 问题描述 We often have to copy large volumes of information. Such operation can take up many computer resources. Therefore…
问满足a^3 + b^3 + c^3 + n = (a+b+c)^3 的 (a,b,c)的个数 可化简为 n = 3*(a + b) (a + c) (b + c) 于是 n / 3 = (a + b)(a + c) (b + c) 令x = a + b,y = a + c,z = b + c,s = n / 3 s = xyz 并且令x <= y <= z,于是我们解s = xyz这个方程,可以枚举x,y得到z. 得到(x,y,z)后便可以得到a,b,c但可能有不符合条件的三元组,化简系数矩…
292D - Connected Components D. Connected Components time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output We already know of the large corporation where Polycarpus works as a system administrato…
Copying Data Time Limit:2000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64u Description We often have to copy large volumes of information. Such operation can take up many computer resources. Therefore, in this problem you are advised to come…
We often have to copy large volumes of information. Such operation can take up many computer resources. Therefore, in this problem you are advised to come up with a way to copy some part of a number array into another one, quickly. More formally, you…
C. Binary Table 题目连接: http://codeforces.com/problemset/problem/662/C Description You are given a table consisting of n rows and m columns. Each cell of the table contains either 0 or 1. In one move, you are allowed to pick any row or any column and i…
