Problem:
Score: 100 points

Problem Statement

E869120 has A 1-yen coins and infinitely many 500-yen coins.

Determine if he can pay exactly N yen using only these coins.

Constraints

N is an integer between 1 and 10000 (inclusive).

A is an integer between 0 and 1000 (inclusive).

Input

Input is given from Standard Input in the following format:

N
A

Output

If E869120 can pay exactly N yen using only his 1-yen and 500-yen coins, print Yes; otherwise, print No.

Sample Input 1

2018
218

Sample Output 1

Yes

We can pay 2018 yen with four 500-yen coins and 18 1-yen coins, so the answer is Yes.

Sample Input 2

2763
0

Sample Output 2

No

When we have no 1-yen coins, we can only pay a multiple of 500 yen using only 500-yen coins. Since 2763 is not a multiple of 500, we cannot pay this amount.

Sample Input 3

37
514

Sample Output 3

Yes

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
int main()
{
    int A,N;
    scanf("%d%d",&N,&A);
    int b;
    b=N;
    if(N>500)
    {
         while(b>=500)
        {
            b=b-500;
        }
        if(b<=A)
        {
            printf("Yes");
        }
        else
        {
            printf("No");
        }
    }
    if(N==500)
    {
        printf("Yes");
    }
    if(N<500)
    {
        if(N<=A)
        {
            printf("Yes");
        }
        else
        {
            printf("No");
        }
    }
}