Pro.ID21941 TitlePower of Cryptography Title链接http://10.20.2.8/oj/exercise/problem?problem_id=21941 AC27 Submit41 Ratio65.85% 时间&空间限制描述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 number theory and other branches of mathematics once considered to be of only theoretical interest. This problem involves the efficient computation of integer roots of numbers. Given an integer n ≥ 1 and an integer p ≥ 1 you have to write a program that determines the n-th positive root of p. In this problem, given such integers n and p, p will always be of the form k to the n-th power, for an integer k (this integer is what your program must find). 输入The input consists of a sequence of integer pairs n and p with each integer on a line by itself. For all such pairs 1 ≤ n ≤ 200, 1 ≤ p < 10101 and there exists an integer k, 1 ≤ k ≤ 109 such that kn = p. 输出Description 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 number theory and other branches of mathematics once considered to be of only theoretical interest. This problem involves the efficient computation of integer roots of numbers. Given an integer n ≥ 1 and an integer p ≥ 1 you have to write a program that determines the n-th positive root of p. In this problem, given such integers n and p, p will always be of the form k to the n-th power, for an integer k (this integer is what your program must find). Input The input consists of a sequence of integer pairs n and p with each integer on a line by itself. For all such pairs 1 ≤ n ≤ 200, 1 ≤ p < 10101 and there exists an integer k, 1 ≤ k ≤ 109 such that kn = p. Output For each integer pair n and p the value k should be printed, i.e., the number k such that kn = p. Sample Input 2 16 Sample Output 4 Source 样例输入2 16 样例输出4 作者 |