static class Point {
        double x;
        double y;

        public Point(String s) {
            String[] split = s.split(",");
            double x1 = Double.parseDouble(split[0].replaceAll("\\(", ""));
            double y1 = Double.parseDouble(split[1].replaceAll("\\)", ""));
            this.x = x1;
            this.y = y1;
        }

        public Point(double x, double y) {
            this.x = x;
            this.y = y;
        }
    }

    static public class Rational {

        private int num, denom;

        public Rational(double d) {
            String s = String.valueOf(d);
            int digitsDec = s.length() - 1 - s.indexOf('.');

            int denom = 1;
            for (int i = 0; i < digitsDec; i++) {
                d *= 10;
                denom *= 10;
            }
            int num = (int) Math.round(d);

            this.num = num;
            this.denom = denom;
        }

        public String toString() {
            return String.valueOf(num) + "/" + String.valueOf(denom);
        }
    }

    public static String IntersectingLines(String[] strArr) {
        Point p1 = new Point(strArr[0]);
        Point p2 = new Point(strArr[1]);
        Point p3 = new Point(strArr[2]);
        Point p4 = new Point(strArr[3]);
        Point intersection = lineLineIntersection(p1, p2, p3, p4);
        if (intersection == null) {
            return "no intersection";
        } else {
            double i1 = intersection.x;
            String n1 = "";
            if (i1 == (int) i1) {
                n1 = String.valueOf((int) i1);
            } else {
                n1 = new Rational(intersection.x).toString();
            }
            double i2 = intersection.y;
            String n2 = "";
            if (i2 == (int) i2) {
                n2 = String.valueOf((int) i2);
            } else {
                n2 = new Rational(intersection.y).toString();
            }
            return "(" + n1 + "," + n2 + ")";
        }
    }

    static Point lineLineIntersection(Point A, Point B, Point C, Point D) {
        double a1 = B.y - A.y;
        double b1 = A.x - B.x;
        double c1 = a1 * (A.x) + b1 * (A.y);

        double a2 = D.y - C.y;
        double b2 = C.x - D.x;
        double c2 = a2 * (C.x) + b2 * (C.y);

        double determinant = a1 * b2 - a2 * b1;

        if (determinant == 0) {
            return null;
        } else {
            double x = (b2 * c1 - b1 * c2) / determinant;
            double y = (a1 * c2 - a2 * c1) / determinant;
            return new Point(x, y);
        }
    }