View Code of Problem 67

#include<stdio.h>
#include<iostream>
#include<cstdlib>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<vector>
#include<cmath>
#include<stack>
#include<map>
#include<vector>
#include<cstdbool>
using namespace std;


int main()
{
	double p[4];
	double p2[4];
	while (cin >> p[0] >> p[1] >> p[2] >> p[3]) {
		double x1;
		if ((p[2] - p[0]) != 0) {
			 x1 = (p[3] - p[1]) / (p[2] - p[0]);
		}
		else {
			x1 = 10220540;
		}
		
		
		cin >> p2[0] >> p2[1] >> p2[2] >> p2[3];
		double x2;
		if ((p2[2] - p2[0]) != 0) {
			x2 = (p2[3] - p2[1]) / (p2[2] - p2[0]);
		}
		else {
			x2 = 10220540;
			if (x1 == x2&&x1== 10220540) {
				if (p[0] != p2[0]) {
					cout << "No" << endl;
				}
				else {
					cout << "Yes" << endl;
				}
			}
		}
		
		double flag, flag2;
		flag = p[1] - x1 * p[0];
		flag2= p2[1] - x2 * p2[0];
		if (x1 == x2) {
			if(flag!=flag2){
			cout << "No" << endl;
			}
			else {
				cout << "Yes" << endl;
			}
		}
		else {
			cout << "Yes" << endl;
		}

	}


	return 0;
}