摘要：ContactIOI'98The cows have developed a new interest in scanning the universe outside their farm with radiotelescopes. Recently, they noticed a very curious microwave pulsing emission sent right from the centre of the galaxy. They wish to know if the emission is transmitted by some extraterrestri 阅读全文

摘要：Alice and BobTime Limit: 10000/5000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 559Accepted Submission(s): 224Problem DescriptionAlice and Bob's game never ends. Today, they introduce a new game. In this game, both of them have N different rectangular cards resp 阅读全文

摘要：Zero SumConsider the sequence of digits from 1 through N (where N=9) in increasing order:1 2 3 ... N.Now insert either a `+' for addition or a `-' for subtraction or a ` ' [blank] to run the digits together between each pair of digits (not in front of the first digit). Calculate the resu 阅读全文

摘要：QueryTime Limit: 20000/10000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 998Accepted Submission(s): 300Problem DescriptionYou are given two strings s1[0..l1], s2[0..l2] and Q - number of queries.Your task is to answer next queries:1) 1 a i c - you should set i-th ch 阅读全文

摘要：Holedox EatingTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 983Accepted Submission(s): 335Problem DescriptionHoledox is a small animal which can be considered as one point. It lives in a straight pipe whose length is L. Holedox can only move alon 阅读全文

摘要：一种排序时间限制：3000 ms | 内存限制：65535 KB难度：3描述现在有很多长方形，每一个长方形都有一个编号，这个编号可以重复；还知道这个长方形的宽和长，编号、长、宽都是整数；现在要求按照一下方式排序（默认排序规则都是从小到大）；1.按照编号从小到大排序2.对于编号相等的长方形，按照长方形的长排序；3.如果编号和长都相同，按照长方形的宽排序；4.如果编号、长、宽都相同，就只保留一个长方形用于排序,删除多余的长方形；最后排好序按照指定格式显示所有的长方形；输入第一行有一个整数 0<n<10000,表示接下来有n组测试数据；每一组第一行有一个整数 0<m<1000 阅读全文

摘要：表达式求值时间限制：3000 ms | 内存限制：65535 KB难度：4描述ACM队的mdd想做一个计算器，但是，他要做的不仅仅是一计算一个A+B的计算器，他想实现随便输入一个表达式都能求出它的值的计算器，现在请你帮助他来实现这个计算器吧。比如输入：“1+2/4=”，程序就输出1.50（结果保留两位小数）输入第一行输入一个整数n，共有n组测试数据（n<10)。每组测试数据只有一行，是一个长度不超过1000的字符串，表示这个运算式，每个运算式都是以“=”结束。这个表达式里只包含+-*/与小括号这几种符号。其中小括号可以嵌套使用。数据保证输入的操作数中不会出现负数。数据保证除数不会为0输出 阅读全文

摘要：括号配对问题时间限制：3000 ms | 内存限制：65535 KB难度：3描述现在，有一行括号序列，请你检查这行括号是否配对。输入第一行输入一个数N（0<N<=100）,表示有N组测试数据。后面的N行输入多组输入数据，每组输入数据都是一个字符串S(S的长度小于10000，且S不是空串），测试数据组数少于5组。数据保证S中只含有"[","]","(",")"四种字符输出每组输入数据的输出占一行，如果该字符串中所含的括号是配对的，则输出Yes,如果不配对则输出No样例输入3[(])(])([[]()])样 阅读全文