using System;

public class Program

{

    public static void Main()

    {

        MainMenu();

        int option = int.Parse(Console.ReadLine());

        if (option = 1)

        {

            int [,] adjMatrix = new int[3,3];

            for (int i= 0; i <=2; i++)

            {

                for (int j = 0; j <=2; j++)

                {

                    if(i==j) adjMatrix[i, j] = 0;

                    else adjMatrix[i, j] = int.MaxValue;

                }

            }

            adjMatrix[0,2] = 35;

            adjMatrix[1,0] = 20;

            adjMatrix[1,2] = 45;

            while(true){

                int edge1 = Convert.ToInt32(Console.ReadLine());

                int edge2 = Convert.ToInt32(Console.ReadLine());

                Console.WriteLine(adjMatrix[edge1,edge2]);

            }

        }

        if (option = 2)

        {

            continue;

        }

        if (option = 3)

        {

            continue;

        }

    }

    static void MainMenu()

    {

        Console.Clear();

        Console.WriteLine("1. Find lines");

        Console.WriteLine("3. Delete lines");

        Console.WriteLine("2. Add Lines");

        Console.WriteLine("What would you like to do?");

    }

}