AC2012 - 博客园

2011年4月28日

摘要： /*简单的数学几何题*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#include <al 阅读全文

posted @ 2011-04-28 21:04 AC2012 阅读(117) 评论(0) 推荐(0) 编辑

1401

摘要： /*阶乘最后的0的个数,求阶乘中含有5的个数啊，原来如此*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset& 阅读全文

posted @ 2011-04-28 20:48 AC2012 阅读(164) 评论(0) 推荐(0) 编辑

1454

摘要： /*大数乘法*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#include <algori 阅读全文

posted @ 2011-04-28 20:18 AC2012 阅读(153) 评论(0) 推荐(0) 编辑

1094

摘要： /*一个用来检查环，一个用来检查是否确定了排序*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#i 阅读全文

posted @ 2011-04-28 19:41 AC2012 阅读(106) 评论(0) 推荐(0) 编辑

1423

摘要： /*求阶乘的位数,居然要516ms,太慢了吧也可用stirling公式做*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include < 阅读全文

posted @ 2011-04-28 14:05 AC2012 阅读(105) 评论(0) 推荐(0) 编辑

3364

摘要： /*数学，找规律*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#include <algo 阅读全文

posted @ 2011-04-28 13:24 AC2012 阅读(464) 评论(0) 推荐(0) 编辑

2917

摘要： /*因子个数等于质因子分解后,各项乘积有不少需要注意的地方*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset 阅读全文

posted @ 2011-04-28 11:45 AC2012 阅读(149) 评论(0) 推荐(0) 编辑

2011年4月27日

3421

摘要： /*找规律来做的*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#include <algo 阅读全文

posted @ 2011-04-27 23:56 AC2012 阅读(255) 评论(0) 推荐(0) 编辑

2739

摘要： /* 简单的数学题*/// include file#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <cctype>#include <ctime>#include <iostream>#include <sstream>#include <fstream>#include <iomanip>#include <bitset>#include <alg 阅读全文

posted @ 2011-04-27 22:43 AC2012 阅读(188) 评论(0) 推荐(0) 编辑

2011年4月22日

1190

摘要： /*pi*R1*R1*H1+pi*R2*R2*H2+...= N*pipi*M*R1*R1*H1 > N*pi > pi*M*Rm*Rm*HmQ = S*pi = ( 2*pi*R1*R1 + 2*pi*R1*H1 ) + ( ) + ...R^2*H<=1000R = 1,H <= 1000R = 2,H <= 250R = 3,H <= 110R = 4,H <= ...R = 31, H <= 1 首先枚举R,H.针对此题，有三个优化，一个是体积的下限，还有两个面积的下限其中面积优化条件，把剩余的体积转化为圆柱体，这个面积作为面积的下限。这阅读全文

posted @ 2011-04-22 16:10 AC2012 阅读(155) 评论(0) 推荐(0) 编辑

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