poj2109巧用pow

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);while(scanner.hasNext()){int n = scanner.nextInt();String str =  scanner.next();double d = Double.parseDouble(String.valueOf(str));System.out.println((int)(Math.pow(d, 1.0/n)+0.5));}}}