A. Candy Bags time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Gerald has n younger brothers and their number happens to be even. One day he bought n2 candy bags. One bag has one candy, one…

读懂了题就会发现这是个超级大水题 Description Gerald has n younger brothers and their number happens to be even. One day he bought n2 candy bags. One bag has one candy, one bag has two candies, one bag has three candies and so on. In fact, for each integer k from 1 t…

A. Candy Bags http://codeforces.com/problemset/problem/334/A   time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Gerald has n younger brothers and their number happens to be even. One day he…

A. Candy Bags time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Gerald has n younger brothers and their number happens to be even. One day he bought n2 candy bags. One bag has one candy, one…

目录 @description@ @solution@ @accepted code@ @details@ @description@ 请找到满足以下条件的长度为 N 的非负整数序列 A1, A2, ..., AN 的数量. (1)L≤A1+A2+...+AN≤R. (2)将 N 个元素排成非增序列后,第 M 个元素要等于第 M + 1 个元素. 请将答案 mod 10^9 + 7. Constraints 所有数都是整数. 1≤M<N≤3×10^5, 1≤L≤R≤3×10^5. Input 输…

题目链接:http://codeforces.com/contest/334/problem/A 题意:有n个人,将1-n袋(第 i  袋共有 i  颗糖果,1<= i  <=n)所有的糖果(n*(n+1)/2)均分到n个人中. 这里要注意的是输出问题,每行中的前n / 2(包括n/2)个数比较容易解决,就是每两个数中相隔n个长度,第n/2个数和第n/2+1个数之间隔了多少个长度,这是值得考虑的问题.我的做法是,由于每个人分到的糖果是 (n / 2) * (n*n+1)  (输出的n个数看成n…

忘了是偶数了,在纸上画奇数画了半天... #include<cstdio> #include<cstring> #include<cstdlib> #include<cmath> #include<algorithm> using namespace std; #define LL __int64 ]; int main() { int n,i,j,tot; scanf("%d",&n); j=; ;i<n;i+…

Kids like candies, so much that they start beating each other if the candies are not fairly distributed. So on your next party, you better start thinking before you buy the candies. If there are KK kids, we of course need K⋅XK⋅X candies for a fair di…

A. Candy Bags 总糖果数\(\frac{n^2(n^2+1)}{2}\),所以每人的数量为\(\frac{n}{2}(n^2+1)\) \(n\)是偶数. B. Eight Point Sets 模拟. C. Secrets 将\(n\)转成3进制数,考虑最后一位非0位,没有刚好\(n\)的数量为非0位的前一位加1,当前位置0,最后将钱都转化为最低单位. D. Chips 在没有障碍的情况下,有冲突的列.行,我们可以找到一个排列解决冲突. 除了\(n\)是奇数时的中心点无法解决冲突.…

A. Candy Bagstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputGerald has n younger brothers and their number happens to be even. One day he bought n2 candy bags. One bag has one candy, one bag has t…