真心說聲,不明白古人為什麼那麼聰明,由一個最簡單的帶餘除法引申出如此之多的智慧...題目:已知 x^k = b ( mod m ) , ( b, m ) = 1, ( E(m), k ) = 1; 告訴你 k, b, m 的值, 要你求:x 的值 儲備知識:(1) 如果b^k = 1 ( mod m ),則 ( b^k )^t = 1 ( mod m ) , t = 1, 2, 3, .... (2) 如果( a, b ) = 1 ,
/*數論基礎,以模餘方程製造密碼,求模 mod 的 k 次根,對密碼解讀... RSA解密: 通過知道的 mod,和 k ,然後進行對密碼破密....*/#include<iostream>#include<cstdio>#include<cmath>#define manx 500using namespace std;long long oula(long long m){ ////歐拉函數 int sum=1; for(long
/*數論基礎,以模餘方程製造密碼,求模 mod 的 k 次根,對密碼解讀... RSA解密: 通過知道的 mod,和 k ,然後進行對密碼破密....*/#include<iostream>#include<cstdio>#include<cmath>#define manx 50000using namespace std;long long kzgcd(long long a,long long b,long long &x,long long &
The Perfect StallTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 8898 Accepted: 4136DescriptionFarmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering problems,
Going HomeTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 9246 Accepted: 4765DescriptionOn a grid map there are n little men and n houses. In each unit time, every little man can move one unit step, either horizontally, or vertically, to
COURSESTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 8076 Accepted: 3208DescriptionConsider a group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it is possible to
Alice's ChanceTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 1613 Accepted: 740DescriptionAlice, a charming girl, have been dreaming of being a movie star for long. Her chances will come now, for several filmmaking companies invite her to
Drainage DitchesTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 24043 Accepted: 8706DescriptionEvery time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water