import java.util.Scanner;

public class logax {

	public static void main(String[] args) {
	System.out.println("计算logax");
	Scanner in =new Scanner(System.in);
	
	System.out.println("输入a:");
	int a=in.nextInt();
	System.out.println("输入x:");
	int x=in.nextInt();
	
	System.out.println("log"+a+" "+x+" = "+(Math.log(x)/Math.log(a)));
	}

}