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