Problem:
Score : 200 points

Problem Statement

An integer X is called a Harshad number if X is divisible by f(X), where f(X) is the sum of the digits in X when written in base 10.

Given an integer N, determine whether it is a Harshad number.

Constraints

1?N?10^8

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

Print Yes if N is a Harshad number; print No otherwise.

Sample Input 1

12

Sample Output 1

Yes

f(12)=1+2=3. Since 12 is divisible by 3, 12 is a Harshad number.

Sample Input 2

57

Sample Output 2

No

f(57)=5+7=12. Since 57 is not divisible by 12, 12 is not a Harshad number.

Sample Input 3

148

Sample Output 3

No

Solution in Java7 (OpenJDK 1.7.0) (judge verdict: Runtime Error)

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int X=sc.nextInt();
		int a=0;
		int b=0;
		while(true) {
			if((int)(X/Math.pow(10,a))>0) {
				a=a+1;
			}else {
				break;
			}
		}
		for(int i=a;i>0;i=i-1) {
			b=b+(int)(X/Math.pow(10,i));
		}
		if(X%b==0) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
		sc.close();
	}
}