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ACM练习题

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全部文章 / ACM练习题（共250篇）

poj3468——A Simple Problem with Integers

You have N integers, A1, A2, … , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number i...

2021-04-05

0 614

hdu1436——排列组合（二）

有N个字母，每个字母的数量不定。用这N个字母组成一个长为M的串，并且规定这个串中每个字母能出现的次数。求这样的串的总数。 Input 每组输入数据的第一行有两个数字N,M。接下来有N行，每行的第一个数k表示对应字母可以出现的种数，接下来的k个数表示该字母可以在串中出现的个数。其中0表示可以不出现...

2021-04-05

0 665

hdu1870——愚人节的礼物

四月一日快到了，Vayko想了个愚人的好办法——送礼物。嘿嘿，不要想的太好，这礼物可没那么简单，Vayko为了愚人，准备了一堆盒子，其中有一个盒子里面装了礼物。盒子里面可以再放零个或者多个盒子。假设放礼物的盒子里不再放其他盒子。用()表示一个盒子，B表示礼物，Vayko想让你帮她算出愚人指数，即...

2021-04-05

0 554

poj2528——Mayor's posters

The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all pl...

2021-04-05

0 536

hdu1698——Just a Hook

In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic...

2021-04-05

0 461

zoj1610——Count the Colors

Painting some colored segments on a line, some previously painted segments may be covered by some the subsequent ones. Your task is counting the segm...

2021-04-05

1 828

Codeforces602B——Approximating a Constant Range

When Xellos was doing a practice course in university, he once had to measure the intensity of an effect that slowly approached equilibrium. A good wa...

2021-04-05

0 450

hdu1257——最小拦截系统

某国为了防御敌国的导弹袭击,发展出一种导弹拦截系统.但是这种导弹拦截系统有一个缺陷:虽然它的第一发炮弹能够到达任意的高度,但是以后每一发炮弹都不能超过前一发的高度.某天,雷达捕捉到敌国的导弹来袭.由于该系统还在试用阶段,所以只有一套系统,因此有可能不能拦截所有的导弹. 怎么办呢?多搞几套系统呗!你...

2021-04-05

0 717

Codeforces1027A——Palindromic Twist

You are given a string s consisting of n lowercase Latin letters. n is even. For each position i (1≤i≤n) in string s you are required to change the l...

2021-04-05

0 501

Codeforces1027B——Numbers on the Chessboard

You are given a chessboard of size n×n. It is filled with numbers from 1 to n2 in the following way: the first ⌈n22⌉ numbers from 1 to ⌈n22⌉ are writt...

2021-04-05

0 354