class MyCalculator {

    /*
* Create the method long power(int, int) here.
*/

public static long power(int n, int p) throws Exception{
  int c = 1;  

  if(n < 0 || p < 0){
     throw new Exception("n or p should not be negative.");
  }
  if(n == 0 && p == 0){
    throw new Exception("n and p should not be zero.");
  }

  if(p >= 0){
  for(int i = 0; i < p; i++){
    c = c * n;
  }
  }

  return c;
}

}