摘要:
Crossing RiverTime Limit:1000MSMemory Limit:10000KTotal Submissions:9919Accepted:3752DescriptionA group of N people wishes to go across a river with o... 阅读全文
摘要:
ti放苹果Time Limit:1000MSMemory Limit:10000KTotal Submissions:24392Accepted:15513Description把M个同样的苹果放在N个同样的盘子里,允许有的盘子空着不放,问共有多少种不同的分法?(用K表示)5,1,1和1,5,1 是... 阅读全文