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package exception.in.power;

import java.util.Scanner;

//Write your code here

class Calculator{

public int power(int n,int p) throws Exception{

if(n<0 || p<0){

throw new Exception("n and p should be non-negative");

}

else{

return (int)Math.pow(n, p);

}

}

}

public class ExceptionInPower {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int t = in.nextInt();

while (t-- > 0) {

int n = in.nextInt();

int p = in.nextInt();

Calculator myCalculator = new Calculator();

try {

int ans = myCalculator.power(n, p);

System.out.println(ans);

}

catch (Exception e) {

System.out.println(e.getMessage());

}

}

in.close();

}

}