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.
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
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
C. Kyoya and Colored Balls Time Limit: 2000ms Memory Limit: 262144KB 64-bit integer IO format: %I64d Java class name: (Any) Submit Status Kyoya Ootori has a bag with n colored balls that are colored with k different colors. The colors are labele
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 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 from 1
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
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
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
CodeChef-LECOINS Little Elephant and Colored Coins Little Elephant and Colored Coins The Little Elephant from the Zoo of Lviv very likes coins. But most of all he likes colored coins. He has N types of coins, numbered from 1 to N, inclusive. The coin
题意: 有k种颜色,每种颜色对应a[i]个球,球的总数不超过1000 要求第i种颜色的最后一个球,其后面接着的必须是第i+1种颜色的球 问一共有多少种排法 Sample test(s) input output input output Note In the first sample, we have 2 balls of color 1, 2 balls of color 2, and 1 ball of color 3. The three ways for Kyoya are: 思路:
