#include <bits/stdc++.h>
using namespace std;
int a, b, c;
int main() {
  scanf("%d%d%d", &a, &b, &c);
  if (c == 0) {
    if (a == b)
      printf("YES\n");
    else
      printf("NO\n");
    return 0;
  }
  b -= a;
  if (b % c == 0 && b / c >= 0)
    printf("YES\n");
  else
    printf("NO\n");
  return 0;
}
