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