[백준] 5692번 : 팩토리얼 진법 - Javascript(자바스크립트)

https://www.acmicpc.net/problem/5692

const fs=require('fs')
ip=fs.readFileSync(0).toString().split('\n')
an=''
for(i=0;;i++){
    a=parseInt(ip[i])
    if(a==0) break
    count=1
    num=1
    sum=0
    while(a>0){
        n=a%10
        sum+=n*num
        a=parseInt(a/10)
        num*=++count
    }
    an+=sum+'\n'
}
console.log(an)