Once upon a younger year
When all our shadows disappeared
The animals inside came out to play
Went face to face with all our fears
Learned our lessons through the tears
Made memories we knew would never fade

One day my father, he told me
"Son, don't let it slip away"
He took me in his arms, I heard him say
"When you get older
Your wild heart will live for younger days
Think of me if ever you're afraid"

He said: "One day you'll leave this world behind
So live a life you will remember"
My father told me when I was just a child
"These are the nights that never die"
My father told me

When thunder clouds start pouring down
Light a fire they can't put out
Carve your name into those shining stars
He said: "Go venture far beyond the shores
Don't forsake this life of yours
I'll guide you home, no matter where you are"

One day my father, he told me
"Son, don't let it slip away"
When I was just a kid, I heard him say
"When you get older
Your wild heart will live for younger days
Think of me if ever you're afraid"

He said: "One day you'll leave this world behind
So live a life you will remember"
My father told me when I was just a child
"These are the nights that never die"
My father told me

"These are the nights that never die"
My father told me
My father told me

/**
 * @param {number} x
 * @param {number} n
 * @return {number}
 */
 var  myPow   = function (x , n ) {
     if  (x   ==   0 )  return   0

     if  (n   ==   0 )  return   1

     if  (n   <   0 ) {
        x   =   1  / x
        n   =   -  1   *  n
    }

     const  half   =  myPow (x , Math.floor (n  /  2 ))
     let  ans   =  half   *  half

     if  (n  %  2   ==   1 ) ans   =  x   *  ans

     return  ans
};

/**
 * @param {number[]} nums
 * @return {SparseVector}
 */
 var  SparseVector   = function (nums ) {
     const  x   = new  Map ()
     for  ( let  i   =   0 ; i   <  nums .length ; i  ++ ) {
         if  (nums [i ]  !=   0 ) {
            x .set (i , nums [i ])
        }
    }
     this.map   =  x
     this.length   =  nums .length
     return this
};


// Return the dotProduct of two sparse vectors
/**
 * @param {SparseVector} vec
 * @return {number}
 */
SparseVector .prototype .dotProduct   = function (vec ) {
     let  ans   =   0 ;

     for  ( let  i   =   0 ; i   <  vec .length ; i  ++ ) {
         if  (vec .map .has (i )  && this.map .has (i )) {
            ans   +=  vec .map .get (i )  * this.map .get (i )
        }
    }

     return  ans
};

// Your SparseVector object will be instantiated and called as such:
// let v1 = new SparseVector(nums1);
// let v2 = new SparseVector(nums2);
// let ans = v1.dotProduct(v2);

nginx.ingress.kubernetes.io/rewrite-target : /