/**@abstract

 * Write your own Math.pow(a int, b int) function

 *  */

function pow (a, b) {

  let result = ;

  let nigate = b < ;

  b = nigate ? b*(-) : b;

  if (b === ) {

    result = ;

  }

  let isEven = b %  === ;

  if (b === ) {

    result = a;

  }

  if (b >= ) {

    result = isEven ? pow(a, b / ) * pow(a, b / )  : a * pow(a, b-);

  }

  return nigate ?  / result : result;

}

console.log(pow(, ) === Math.pow(,));

console.log(pow(, -) === Math.pow(, -));

console.log(pow(, ) === Math.pow(, ));

console.log(pow(, ) === Math.pow(, ));

console.log(pow(, ) === Math.pow(, ));

console.log(pow(-, ) === Math.pow(-, ));

console.log(pow(-, -) === Math.pow(-, -));

console.log(pow(, ) === Math.pow(,));

console.log(pow(, -) === Math.pow(, -));

console.log(pow(, ) === Math.pow(,));

console.log(pow(, -) === Math.pow(, -));

console.log(pow(-, ) === Math.pow(-, ));

console.log(pow(, ) === Math.pow(, ));