#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c;
  cin >> a >> b >> c;
  if (c == 0) {
    if (a == b)
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  } else if ((b - a) % c == 0 && (b - a) / c >= 0)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}
