#include <iostream>
using namespace std;

// Structure to hold coordinate data
struct Coordinate {
    double x;
    double y;
};

int main() {
    double a1, b1, a2, b2;
    
    while (true) {
        // Input parameters for the first line
        cout << "Input the a and b parameters for the first line: \n";
        cin >> a1 >> b1;

        // Input parameters for the second line
        cout << "Input the a and b parameters for the second line:\n ";
        cin >> a2 >> b2;

        // Check if the slopes are equal
        if (a1 == a2) {
            cout << "The slopes of the lines are equal. Please re-enter all parameter values.\n" << endl;
        } else {
            break; // Exit the loop if the slopes are not equal
        }
    }

    // Calculate the point of intersection
    Coordinate intersection;
    intersection.x = (b2 - b1) / (a1 - a2);
    intersection.y = a1 * intersection.x + b1;

    // Display the intersection coordinates
    cout << "The intersection coordinates are: (" << intersection.x << ", " << intersection.y << ")" << endl;

    return 0;
}