有为杯  Problem I DAG  有向无环图 A direct acylic graph(DAG),is a directed graph with no directed cycles . That is ,it is formed by a collection of  vertion  of  vertices  and  directed  edges ,  each     edge connecting   one vertex to another,such that the…

The number of steps nid=24#time" style="padding-bottom:0px; margin:0px; padding-left:0px; padding-right:0px; color:rgb(83,113,197); text-decoration:none; padding-top:0px"> Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描写叙述 Mary…

题目描述: Word Counting Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 128000/64000 KB (Java/Others) SubmitStatistic Next Problem Problem Description Each year on May the graduate students are busy writing thesis, and the graduation thesis needs th…

前几天看了ACM的第一题,映入眼帘的是一个“简单”的题目: 输入两个数,a,b 输出他们的和. 本着,此乃ACM的原则,便有了如下的思考: ACM的题目肯定很难,a+b,怎么可能直接printf,不行,应该不是这么简单. 是否可以利用字符串的方式进行解答,思路我都想好了. 思路如下: ================================================================= 1.用字符串来获取输入的数字. 2.两个字符串相加,将其限定在0-9表示的范围内.…

A Simple Problem with Integers Time Limit:5000MS Memory Limit:131072KB 64bit IO Format:%lld & %llu Description 给出了一个序列,你需要处理如下两种询问. "C a b c"表示给[a, b]区间中的值全部增加c (-10000 ≤ c ≤ 10000). "Q a b" 询问[a, b]区间中所有值的和. Input 第一行包含两个整数N, Q.1…

今年的比赛最大的变化就是改用OJ判题了,相比于PC^2确实省事了不少,至少可以直接复制样例了.题目方面依旧是刘汝佳命题,这点还是相当好的,至少给人以足够的安全感. 开始比赛之后安叔瞬间就把前半部分题目抢过去了……想到可能前面的题目会比较简单我就让安叔分我一点,然后安叔就把A丢给我了,接着很快安叔就决定上去敲C了.于是我就开始默默地看题了……A是找个最长的近似回文子串,算了一下暴力没问题,然后又看了H,完成区间加和查询单点就可以了,但是又仔细想了一下其实排个序+二分+前缀和更好写一些,这时琦琦又给…

A + B Problem (4) 时间限制(普通/Java):1000MS/3000MS          运行内存限制:65536KByte总提交:2496            测试通过:1249 描述 Calculate the sum of some integers. 输入 The input will consist of multiple test cases. Each test case consist of an integer N and then N integers…

Home Problems 1086 A + B Problem (3) 时间限制(普通/Java):1000MS/3000MS          运行内存限制:65536KByte总提交:2317            测试通过:1452 描述 Calculate a + b. 输入 The input will consist of an integer N in the first line, and N pairs of integers a and b,separated by a s…

A + B Problem (2) 时间限制(普通/Java):1000MS/3000MS          运行内存限制:65536KByte总提交:2600            测试通过:1372 描述 Calculate a + b. 输入 The input will consist of a series of pairs of integers a and b,separated by a space, one pair of integers per line. A line c…

A + B Problem (1) 时间限制(普通/Java):1000MS/3000MS          运行内存限制:65536KByte总提交:5907            测试通过:1516 描述 Calculate a + b. 输入 The input will consist of a series of pairs of integers a and b,separated by a space, one pair of integers per line. 输出 For e…