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