function log(x, y) {
  return Math.log(y) / Math.log(x);
}


biggest_deg = (num,base)=>Math.floor( log(base,num) );
biggest_log = (num,base)=>Math.pow(base,biggest_deg(num,base));
biggest_log_n = (num,base)=>Math.floor(num / biggest_log(num,base));
biggest_fit = (num,base)=> biggest_log(num,base)*biggest_log_n(num,base);

convert = (num,base)=>{

let res = [];
for(let i = 0; i <= biggest_deg(num,base); i++)
 res.push(0);


while(num>=base){
 res[res.length-1-biggest_deg(num,base)] = biggest_log_n(num,base);
 num-=biggest_fit(num,base);
};

res[res.length-1] = num;

return res;
         
}