2025. Line Fighting Time limit: 1.0 second Memory limit: 64 MB Boxing, karate, sambo- The audience is sick of classic combat sports. That is why a popular sports channel launches a new competition format based on the traditional Russian entertainment…

1796. Amusement Park Time limit: 1.0 second Memory limit: 64 MB On a sunny Sunday, a group of children headed by their teacher came to an amusement park. Aunt Frosya,who was a very kind and quiet person, worked at the ticket window on that day. The t…

组合数学(math) 题目描述 为了提高智商,zjy开始学习组合数学.某一天她解决了这样一个问题:“给一个网格图,其中某些格子有财宝.每次从左上角出发,只能往右或下走.问至少要走几次才能把财宝全部捡完.”但是她还不知足,想到了这个问题的一个变形:假设每个格子中有好多块财宝,而每一次经过一个格子至多只能捡到一块财宝,其他条件不变,至少要走几次才可能把财宝全捡完? sol 有个定理,这个值等于最长反链. 然而我看不懂那个定理,只好意会. 首先一条从右上到左下的链是没法被同一次吃完的. 算了突然意会不…

Prufer Code Time limit: 0.25 secondMemory limit: 8 MB A tree (i.e. a connected graph without cycles) with vertices is given (N ≥ 2). Vertices of the tree are numbered by the integers 1,-,N. A Prufer code for the tree is built as follows: a leaf (a ve…

Description Kolya has returned from a summer camp and now he's a real communication fiend. He spends all his free time on the Web chatting with his friends via ICQ. However, lately the protocol of this service was changed once again, and Kolya's clie…

The blocks in the city of Fishburg are of square form. N avenues running south to north and Mstreets running east to west bound them. A helicopter took off in the most southwestern crossroads and flew along the straight line to the most northeastern…

Yunduan CUI graphical user interfaces make easy tasks easy, while command line interfaces make difficult tasks possible Part 1 学习Shell 1. 什么是 Shell? Shell 是用户与操作系统交流的程序,它读取用户的键盘输入并交由操作系统执行相应的命令.所有linux都支持一个叫做 bash 的shell,它的全称是 "Bourne Again SHell&quo…

Given a 2-dimensional array of positive and negative integers, find the sub-rectangle with the largest sum. The sum of a rectangle is the sum of all the elements in that rectangle. In this problem the sub-rectangle with the largest sum is referred to…

1100. Final Standings Time limit: 1.0 secondMemory limit: 16 MB Old contest software uses bubble sort for generating final standings. But now, there are too many teams and that software works too slow. You are asked to write a program, which generate…

1146. Maximum Sum Time limit: 1.0 second Memory limit: 64 MB Given a 2-dimensional array of positive and negative integers, find the sub-rectangle with the largest sum. The sum of a rectangle is the sum of all the elements in that rectangle. In this…