题目链接:http://codeforces.com/contest/792/problem/E 假设含球较少的那些堆有 $mi$ 个球,较多的那些堆有$ma$个球,$ma=mi+1$,考虑对于最小的$a_i$枚举值 $mi$ ,表示我要将这堆求分成${\left \lfloor \frac{a_i}{k} \right \rfloor}$堆,每一堆$k$个,那么这种颜色就会有${{a_i ~~ mod ~~k}}$个球多出来,所以当且仅当 ${{\left \lfloor \frac{a_i}…

C. Kyoya and Colored Balls Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/C Description Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled from 1 to k.…

C. Kyoya and Colored Balls Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled from 1 to k. Balls of the same color are indistinguishable. He draws balls from the bag one by one until the bag i…

time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled from 1 to k. Balls of the same colo…

题目描述: Kyoya and Colored Balls time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled f…

Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled from 1 to k. Balls of the same color are indistinguishable. He draws balls from the bag one by one until the bag is empty. He noticed that he…

Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labeled from 1 to k. Balls of the same color are indistinguishable. He draws balls from the bag one by one until the bag is empty. He noticed that he…

题目链接: A. Kyoya and Colored Balls time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labele…

这个题.比赛的时候一直在往dp的方向想,可是总有一个组合数学的部分没办法求, 纯粹组合数学撸,也想不到办法-- 事实上,非常显然.. 从后往前推,把第k种颜色放在最后一个,剩下的k球.还有C(剩余的位置,k球的总数目-1)种放法 然后讨论第k-1种...推下去就好了 可是当时没想到-- 这里要求组合数.因为比較大.用乘法逆元... 当然直接套lucas也是能够的. ... time limit per test 2 seconds memory limit per test 256 megaby…

https://codeforces.com/gym/253910/problem/F F. Kyoya and Colored Balls time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Kyoya Ootori has a bag with n colored balls that are colored with k d…