题目地址:http://poj.org/problem?id=2109 /* 题意:k ^ n = p,求k 1. double + pow:因为double装得下p,k = pow (p, 1 / n); 基础知识: 类型 长度 (bit) 有效数字 绝对值范围 float 32 6~7 10^(-37) ~ 10^38 double 64 15~16 10^(-307) ~ 10^308 long double 128 18~19 10^(-4931) ~ 10 ^ 4932 2. 二分查找…

点击打开链接 Power of Cryptography Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 16388   Accepted: 8285 Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these pr…

Power of Cryptography Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 26622   Accepted: 13301 Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes.…

Power of Cryptography Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 21354 Accepted: 10799 Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work…

题目:http://poj.org/problem?id=2109 题意:求一个整数k,使得k满足kn=p. 思路:exp()用来计算以e为底的x次方值,即ex值,然后将结果返回.log是自然对数,就是e为底计算的.换底公式 log<a>(b) = log<c>(b) / log<c>(a). float 的范围为-2^128 ~ +2^127,也即-3.40E+38 ~ +3.40E+38: double 的范围为-2^1024 ~ +2^1023,也即-1.79E+…

Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of results from number theory and other branches of mathematics onc…

题目链接: http://poj.org/problem?id=2109 参考: http://blog.csdn.net/code_pang/article/details/8263971 题意: 给定n,p,求k使得kn=p(1≤n≤200, 1≤p<10101, 1≤k≤109) 分析: 高精度+二分~~ k的位数为p的位数除以n的向上取整,这样知道k的位数便可以在范围内二分了~注意这里的答案是向下取整~~ 代码: #include<cstring> #include<cst…

import java.math.BigInteger; import java.util.Scanner; public class Main { static BigInteger p,l,r,div; static int n; public static int cmp(BigInteger mid){ BigInteger sum=mid.pow(n); return sum.compareTo(p); } public static BigInteger calc(){ l=BigI…

1.Link: http://poj.org/problem?id=2109 http://bailian.openjudge.cn/practice/2109/ 2.Content: Power of Cryptography Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 18872   Accepted: 9520 Description Current work in cryptography involves (…

Power of Cryptography Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 18258   Accepted: 9208 Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. W…

Power of Cryptography Time limit: 3.000 seconds http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=99&page=show_problem&problem=49 http://poj.org/problem?id=2109   Time Limit: 1000MS   Memory Limit: 30000K Total…

[POJ2109]Power of Cryptography 试题描述 Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of results from number theory a…

Power of Cryptography  Background Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers modulo functions of these primes. Work in this area has resulted in the practical use of results from num…

Power of Cryptography DescriptionCurrent work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of results from number theory and…

POJ 1459 Power Network / HIT 1228 Power Network / UVAlive 2760 Power Network / ZOJ 1734 Power Network / FZU 1161 (网络流,最大流) Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A…

连续重复子串问题 poj 2406 Power Strings http://poj.org/problem?id=2406 问一个串能否写成a^n次方这种形式. 虽然这题用kmp做比较合适,但是我们还是用后缀数组做一做,巩固后缀数组的能力. 对于一个串,如果能写出a^n这种形式,我们可以暴力枚举循环节长度L,那么后缀suffix(1)和suffix(1 + L)的LCP应该就是 lenstr - L.如果能满足,那就是,不能,就不是. 这题的话da算法还是超时,等我学了DC3再写上来. 其实这…

Power of Cryptography Time Limit: 1000MS Memory Limit: 30000K Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practic…

题目传送门 /* 题意:一个串有字串重复n次产生,求最大的n KMP:nex[]的性质应用,感觉对nex加深了理解 */ /************************************************ * Author :Running_Time * Created Time :2015-8-10 10:51:54 * File Name :POJ_2406.cpp ************************************************/ #incl…

  Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 20351   Accepted: 10284 Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area ha…

妈妈呀....这简直是目前死得最惨的一次. 贴题目: http://poj.org/problem?id=3233 Matrix Power Series Time Limit: 3000MS Memory Limit: 131072K Total Submissions: 19128 Accepted: 8068 Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 +…

F - Power Strings Time Limit:3000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 2406 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = &…

题目连接 http://poj.org/problem?id=1459 Power Network Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node u may be supplied with an amount s(u) >= 0 of power, may produce an…

http://poj.org/problem?id=2406 Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 27003   Accepted: 11311 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = &q…

//只用一行核心代码就可以过的天坑题目............= = 题目: Description Current work in cryptography involves (among other things) large prime numbers and computing powers of numbers among these primes. Work in this area has resulted in the practical use of results from…

Power Strings Problem's Link: http://poj.org/problem?id=2406 Mean: 给你一个字符串,让你求这个字符串最多能够被表示成最小循环节重复多少次得到. analyse: KMP之next数组的运用.裸的求最小循环节. Time complexity: O(N) Source code:  ;;      ;);      ) ;}/* */…

Matrix Power Series Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 20309   Accepted: 8524 Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Input The input contains exactly one test cas…

Power Strings Time Limit: 3000MSMemory Limit: 65536K Total Submissions: 29663Accepted: 12387 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef…

Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 30069   Accepted: 12553 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "…

点击打开链接 Power Network Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 20903   Accepted: 10960 Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node u may be su…

点击打开链接 Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 27368   Accepted: 11454 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b =…