import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

class Solver {

    double[][] coordsA;
    double[][] coordsB;
    double[][] coordsC;
    double[][] coordsM;
    int size;

    public Solver(int size) {
        this.size = size;
        coordsA = new double[size][2];
        coordsB = new double[size][2];
        coordsC = new double[size][2];
        coordsM = new double[size][2];
    }

    public void readCoords(BufferedReader br) throws IOException {

	// use br to read the lines from standard input
    }

    public void solve() {
	// compute the solution for each of the size problems and print it
    }
}

class Delta {
    public static void main(String[] args) {
	try {
	    Solver solve = null;
	    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	    String line = br.readLine();
	    int size = Integer.parseInt(line);
	    solve = new Solver(size);
	    solve.readCoords(br);
	    solve.solve();
	}
	catch(IOException e) {
	    System.err.println("cannot read input file");
	}
    }
}