http://codeforces.com/problemset/problem/735/D 题意是..一个数n的贡献是它的最大的因子,这个因子不能等于它本身 然后呢..现在我们可以将n拆成任意个数的整数相加,每个数最小只能拆成2, 单独计算每个数的贡献,然后加起来使他的贡献最小..那么我们肯定是拆成质数最赚 因为质数对答案的贡献是1... 所以现在这个问题变成了把一个数拆成最少个数的质数 那么我们不知道最少能拆成多少个质数啊..我一开始想的是你每次找最接近这个数的质数..一直找下去应该是可以的…

题目大意:给你$n$,把它分成若干个数$n_i$,记价值为$\sum_{i=1}^k(\sum_{j|n_i}j-n_i)$(即分成的每个数的约数和(不包括自身)).(以前写的题,不知道为什么没交) 题解:分成质数,根据哥德巴赫猜想,大于$2$的偶数都可以分成两个质数的和,那么奇数有$3$中可能:$1.$自己是质数:$2.$分成$2$和一个质数:$3.$分成一个质数和一个偶数(再分成两个质数) 卡点:无 C++ Code: #include <cstdio> #include <cstd…

题目大意:将$1$到$n(1<n\leqslant6000)$分成若干组数,要求每组数的和均为质数,若存在一种分配方式,输出每个数所在的组的编号,有多组解输出任意一组解,若不存在,输出$-1$ 题解:根据这一题的结论分[CF735D]Taxes. 卡点:未判断奇数分成$3$个质数的情况 C++ Code: #include <cstdio> #define maxn 6010 int n; int bel[maxn], idx; inline bool isp(int x) { for…

Taxes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mr. Funt now lives in a country with a very specific tax laws. The total income of mr. Funt during this year is equal to n (n ≥ 2) bur…

D. Taxes 题目链接 http://codeforces.com/contest/735/problem/D 题面 Mr. Funt now lives in a country with a very specific tax laws. The total income of mr. Funt during this year is equal to n (n ≥ 2) burles and the amount of tax he has to pay is calculated a…

题目链接:Taxes D. Taxes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mr. Funt now lives in a country with a very specific tax laws. The total income of mr. Funt during this year is equal to…

Taxes can be one of the largest cash outflows that a firm experiences.The size of the tax bill(税单) is determined through the tax code(税则) and often-amended set of rules. Notes:If the various rules of taxation seem a little bizarre(奇怪的) or convoluted(…

This chapter-2 we learn about the the financial statements(财务报表),taxes and cash flow.We must pay particular attention to two important differences: 1.the difference between accounting value and market value 2.the difference between accounting income…

题目: SALES TAXES Basic sales tax is applicable at a rate of 10% on all goods, except books, food, and medical products that are exempt. Import duty is an additional sales tax 除书籍 食品 药品外其他商品基本税为10%.进口税附加5%,不免税. applicable on all imported goods at a rat…

D. Taxes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Mr. Funt now lives in a country with a very specific tax laws. The total income of mr. Funt during this year is equal to n (n ≥ 2)…