View Code of Problem 67

#include<iostream>
#include<algorithm>
#include<math.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<cstring>
#include<string>
using namespace std;
int main() {
    int x1,x2,x3,x4,y1,y2,y3,y4;
	while(cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4) 
   {
   		if(((y1-y2)*(x3-x4)==(x1-x2)*(y3-y4))&&((y1-y2)*(x3-x1)!=(x1-x2)*(y3-y1)))
   		{cout<<"No"<<endl;
		   }
		   else
		   cout<<"Yes"<<endl;
   }
	return 0;
}