_ostreamBaba

青蛙的约会 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 108204 Accepted: 21663 Description 两只青蛙在网上相识了，它们聊得很开心，于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上，于是它们约定各自朝西跳，直到碰面为止。可是它们出发之前忘记了一件很重要的事情，

Subsequence Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14033 Accepted: 5936 DescriptionA sequence of N positive integers (10 < N < 100 000), each of them less than or equal

John's trip Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 8960 Accepted: 3002 Special Judge DescriptionLittle Johnny has got a new car. He decided to drive around the town to

Is It A Tree? Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 31698 Accepted: 10765 DescriptionA tree is a well-known data structure that is either empty (null, void, nothing) or

DescriptionEvery time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water for awhile and takes quite a long time to regrow

Going Home Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 22091 Accepted: 11156 DescriptionOn a grid map there are n little men and n houses. In each unit time, every little man

IMMEDIATE DECODABILITY Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 13123 Accepted: 6275 DescriptionAn encoding of a set of symbols is said to be immediately decodable if no c

4 Values whose Sum is 0 Time Limit: 15000MS Memory Limit: 228000K Total Submissions: 20385 Accepted: 6116 Case Time Limit: 5000MS Description The SUM problem can be formulated as follows: gi

DescriptionACM has bought a new crane (crane -- jeřáb) . The crane consists of n segments of various lengths, connected by flexible joints. The end of the i-th segment is joined to the beginning of the

Jessica's Reading Problem Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 11032 Accepted: 3718 DescriptionJessica's a very lovely girl wooed by lots of boys. Recently she has a p

Biorhythms Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 130935 Accepted: 41750 DescriptionSome people believe that there are three cycles in a person's life that start the day

LogLoader是一家专门提供日志分析产品的公司。Ikki在做毕业设计的同时，还忙于在LogLoader做实习。在他的工作里，有一项是要写一个模块来处理时间区间。这个事情一直让他感到很迷糊，所以现在他很需要你帮忙。 在离散数学里面，你已经学习了几种基本的集合运算，具体地说就是并、交、相对补和对称差。它们自然地也适用于区间这种特殊的集合。作为你的快速参考，它们可以总结成下表： 运...