#include<iostream> 
#include<cstdio>
#include<cstring>
using namespace std;
int a,b,c;
int main()
{
	cin>>a>>b>>c;
	if(c==0||a==b)
	{
      cout<<"YES"<<endl;
      return 0;
	}
	else if(c!=0)
	{
	  if(c>0||(b-a)%c==0)
	  {
		cout<<"YES"<<endl;
		return 0;
	  }
	  if(c<0||(a-b)%c==0||a>b)
	  {
	   cout<<"YES"<<endl;
	   return 0;
	  }
	  
	}
	else
	{
		cout<<"NO"<<endl;
		return 0;
	 } 
	  return 0; 
}