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题目链接： http://bestcoder.hdu.edu.cn/contests/contest_chineseproblem.php?cid=718&pid=1001求x的和，想要和最小，那么Xn就得尽可能大 基本就是从后往前开始除除减减 n是整型的数字，最大值2^32-1 当m大于32的时候就没意义，直接从31开始处理数据。#include<iostream>#include<cm

Codeforces

Codeforces

ACM

简单dp

水题，补题

Snacktower

ACM

STL

The binomial coefficient C(m, n) is defined as C(m, n) = m!/[(m − n)! n!] Given four natural numbers p, q, r, and s, compute the the result of dividing C(p, q) by C(r, s).Input Input consists

It’s Saturday today, what day is it after 1^1 + 2^2 + 3^3 + … + N^N days?Input There are multiple test cases. The first line of input contains an integer T indicating the number of test cases. For e

Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all contiguous s

Mike is frantically scrambling to finish his thesis at the last minute. He needs to assemble all his research notes into vaguely coherent form in the next 3 days. Unfortunately, he notices that h

Given a positive integer X, an X-factor chain of length m is a sequence of integers,1 = X0, X1, X2, …, Xm = XsatisfyingXi < Xi+1 and Xi | Xi+1 where a | b means a perfectly divides into b.Now we are in

ACM

模拟

数据结构