dd_lucky的博客

Polycarp is a big lover of killing time in social networks. A page with a chatlist in his favourite network is made so that when a message is sent to some friend, his friend's chat rises to the very t

In Berland recently a new collection of toys went on sale. This collection consists of 109 types of toys, numbered with integers from 1 to109. A toy from the new collection of the i-th type costs 

Misha and Changing Handles Time Limit: 1000MS   Memory Limit: 262144KB   64bit IO Format: %I64d & %I64u Submit Status Description Misha hacked the Codeforces site. Then h

排列2 Time Limit: 1000MS   Memory Limit: 32768KB   64bit IO Format: %I64d & %I64u Submit Status Description Ray又对数字的列产生了兴趣：  现有四张卡片，用这四张卡片能排列出很多不同的4位数，要求按从小到大的顺序输出这些4位数。

USACO ORZ Time Limit: 1500MS   Memory Limit: 32768KB   64bit IO Format: %I64d & %I64u Submit Status Description Like everyone, cows enjoy variety. Their current fancy is

Ananagrams Time Limit: 3000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status Description Most crossword puzzle fans are used to anagrams--groups

Andy's First Dictionary Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him, as the number of words that he knows is, well, not quite enough. Instead

Description Background  Many areas of Computer Science use simple, abstract domains for both analytical and empirical studies. For example, an early AI study of planning and robotics (STRI

Team Queue Time Limit: 3000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status Description Queues and Priority Queues are data structures which ar