#include <bits/stdc++.h>
int main() {
  int a, b, c;
  scanf("%d %d %d", &a, &b, &c);
  if (c < 0) {
    a *= -1;
    c *= -1;
    b *= -1;
  }
  if (b < a) {
    printf("NO\n");
  } else if (c == 0 && b == a)
    printf("YES\n");
  else if (c == 0)
    printf("NO\n");
  else {
    if ((b - a) % c == 0)
      printf("YES\n");
    else
      printf("NO\n");
  }
  return 0;
}
