随笔分类 - 数学
摘要：易游戏雷火盘古校园招聘开始！ 易游戏雷火盘古校园招聘开始！ kiki's game Problem Description Recently kiki has nothing to do. While she is bored, an idea appears in his mind, she ju
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摘要：Problem Description Recently kiki has nothing to do. While she is bored, an idea appears in his mind, she just playes the checkerboard game.The size o
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摘要：我们称一个长度为2n的数列是有趣的，当且仅当该数列满足以下三个条件： (1)它是从1到2n共2n个整数的一个排列{ai}； (2)所有的奇数项满足a1<a3<…<a2n-1，所有的偶数项满足a2<a4<…<a2n； (3)任意相邻的两项a2i-1与a2i(1≤i≤n)满足奇数项小于偶数项，即：a2i
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摘要：Devu wants to decorate his garden with flowers. He has purchased n boxes, where the i-th box contains fi flowers. All flowers in a single box are of t
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摘要：任何正整数都能分解成2的幂，给定整数N，求N的此类划分方法的数量！由于方案数量较大，输出Mod 1000000007的结果。 比如N = 7时，共有6种划分方法。 7=1+1+1+1+1+1+1 =1+1+1+1+1+2 =1+1+1+2+2 =1+2+2+2 =1+1+1+4 =1+2+4 Inp
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摘要：You will be given a string which only contains ‘1’; You can merge two adjacent ‘1’ to be ‘2’, or leave the ‘1’ there. Surly, you may get many differen
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摘要：nn pagodas were standing erect in Hong Jue Si between the Niushou Mountain and the Yuntai Mountain, labelled from 11 to nn. However, only two of them
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摘要：直接打表找规律 HazelFan is given two positive integers a,ba,b， and he wants to calculate amodbamodb. But now he forgets the value of bb and only remember the
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摘要：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
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摘要：An Arc of Dream is a curve defined by following function: where a 0 = A0 a i = a i-1*AX+AY b 0 = B0 b i = b i-1*BX+BY What is the value of AoD(N) modu
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摘要：Given the value of a+b and ab you will have to find the value of a n + b n Input The input file contains several lines of inputs. Each line except the
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摘要：#include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long LL; typedef unsigned long long ULL; #define MAXN 4...
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摘要：Let’s define another number sequence, given by the following function: f(0) = a f(1) = b f(n) = f(n − 1) + f(n − 2), n > 1 When a = 0 and b = 1, this
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摘要：Alice is given a list of integers by Bob and is asked to generate a new list where each element in the new list is the sum of some other integers in t
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摘要：One day, Alice and Bob felt bored again, Bob knows Alice is a girl who loves math and is just learning something about matrix, so he decided to make a
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摘要：Read the program below carefully then answer the question. #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include<iostream
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摘要：In our daily life we often use 233 to express our feelings. Actually, we may say 2333, 23333, or 233333 ... in the same meaning. And here is the quest
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摘要：A - Jzzhu and Sequences Jzzhu has invented a kind of sequences, they meet the following property: You are given x and y, please calculate fn modulo 10
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摘要：A. Treasure Hunt time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Captain Bill the Humming
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摘要：Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 13381 Accepted: 5208 Description The cows, as you know, have no fingers or thumbs and thus
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