题目: Description There are only one case in each input file, the first line is a integer N (N ≤ 1,000,00) denoted the total operations executed by Mary. Then following N lines, each line is one of the folling operations. D L R : draw a segment [L, R],…

ACdream 1214---矩阵连乘 Problem Description You might have noticed that there is the new fashion among rich people to have their yards tiled with black and white tiles, forming a pattern. The company Broken Tiles is well known as the best tiling company…

 LCM Challenge Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1077 Description Some days ago, I learned the concept of LCM (least common multiple). I've played with it for several times and I…

Triangles Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1067 Description 已知一个圆的圆周被  N 个点分成了 N 段等长圆弧,求任意取三个点,组成锐角三角形的个数. Input 多组数据. 每组数据一个N (N ≤  1000000). Output 对于每组数据,输出不同锐角三角形的个数. Sample…

A - A Very Easy Triangle Counting Game Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1008 Description Speedcell and Shoutmon love triangles very much.One day,they are playing a game named “T…

Bet Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1066 Description Josnch星球是一个赌博之风盛行的星球. 每个人一出生就有一定数额的钱,之后的所有收入只能由赌博获得(OMG,如果RP不好,输光了所有的钱...) 假设赌博公司的某场赌博有 N 个结果,每个结果能获得的赔率比分别是 a[1],a[2]...a[…

郭式树 Time Limit:2000MS     Memory Limit:128000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1061 Description 郭橐驼,不知始何名.病偻,隆然伏行,有类橐驼者,故乡人号之驼.驼闻之,曰:“甚善.名我固当.”因舍其名,亦自谓橐驼云.其乡曰丰乐乡,在长安西.驼业种树,凡长安豪富人为观游及卖果者,皆争迎取养.视驼所种树,或移徙,无不活:且硕茂,蚤实以蕃.他植者…

Read Phone Number Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1188 Description Do you know how to read the phone numbers in English? Now let me tell you. For example, In China, the phone n…

Sudoku Checker Time Limit:1000MS     Memory Limit:64000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1195 Description Sudoku is a popular single player game. The objective is to fill a 9x9 matrix with digits so that each column, e…

Alice and Bob Time Limit:3000MS     Memory Limit:128000KB     64bit IO Format:%lld & %llu Submit Status Practice ACdream 1112 Description Here  is Alice and Bob again ! Alice and Bob are playing a game. There are several numbers. First, Alice choose…