寒假的第一天,终于有空再写题目了,专心备战了.本想拿usaco上的题目练手热身,结果被磕住了T T.其实这是一道穷举题,一开始我在穷举a,b,但是怎么优化就是过不了Test 8,后来参照NOCOW上的解题弄了se和list两个数组,也算是终于通过了,这时候已经是Submission #7了.(啊,有两次是因为没开文件,一次是因为没打‘NONE’)总之,祝寒假的OI学习顺利吧~All or Nothing, Now or Never! program ariprog2; ..*] of boole…

题目 题目描述 现在给你一个数集,里面的数字都是由p^2+q^2这种形式构成的0 <= p,q <= M,我现在需要你在其中找出一个长为N的等差数列,数列中的第一个数字为a,公差为b,当你找到多个这样的数列时,输出数列的a b值,输出顺序按照b的值从小到大排序,当b的值一样的时候,按照a的值从小到大排序输出. 数据范围 (3 <= N <= 25) (1 <= M <= 250) 样例输入 5 7 样例输出 1 4 37 4 2 8 29 8 1 12 5 12 13…

P1214 [USACO1.4]等差数列 Arithmetic Progressions• o 156通过o 463提交• 题目提供者该用户不存在• 标签USACO• 难度普及+/提高 提交 讨论 题解 最新讨论• 这道题有问题• 怎么进一步优化时间效率啊 …题目描述一个等差数列是一个能表示成a, a+b, a+2b,..., a+nb (n=0,1,2,3,...)的数列.在这个问题中a是一个非负的整数,b是正整数.写一个程序来找出在双平方数集合(双平方数集合是所有能表示成p的平方 + q的平…

[Educational Codeforces Round 16]D. Two Arithmetic Progressions 试题描述 You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R andx = a1k' + b1 = a2l' + b2, for some integers k', l' ≥ 0. 输入 Th…

Dirichlet's Theorem on Arithmetic Progressions Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 16733   Accepted: 8427 Description If a and d are relatively prime positive integers, the arithmetic sequence beginning with a and increasing…

Dirichlet's Theorem on Arithmetic Progressions Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 13636   Accepted: 6808 Description If a and d are relatively prime positive integers, the arithmetic sequence beginning with a and increasing…

题目地址:http://poj.org/problem?id=3006 刷了好多水题,来找回状态...... Dirichlet's Theorem on Arithmetic Progressions Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 16803   Accepted: 8474 Description If a and d are relatively prime positive integers, t…

Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit cid=1006#status//I/0" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" style="font-family:Verdana,Arial,sans-serif; f…

Arithmetic Progressions An arithmetic progression is a sequence of the form a, a+b, a+2b, ..., a+nb where n=0,1,2,3,... . For this problem, a is a non-negative integer and b is a positive integer. Write a program that finds all arithmetic progression…

Two Arithmetic Progressions 题目链接: http://codeforces.com/contest/710/problem/D Description You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, for some inte…