using System;

public class Program

{

    public static void Main()

    {Console.Write("M1=");

    var M1 =int.Parse(Console.ReadLine());

    Console.Write("M2=");

     var M2 = int.Parse(Console.ReadLine());

     Console.Write ("Въведете знак: +, -, *, /, или §");

     var Terminator=char.Parse(Console.ReadLine());

     switch ( Terminator )

         case '+':{Console.WriteLine("(0)+(1)=(2)",M1,M2,M1+M2);};break;

         case '-':{Console.WriteLine("(0)-(1)=(2)",M1,M2,M1-M2);};break;

         case '*':{Console.WriteLine("(0)*(1)=(2)",M1,M2,M1*M2);};break;

     case '/':{if (M2==0) Console.WriteLine("Cannot divide {0} by zero",M1);

     else Console.WriteLine("{0} / {1} = {2}",M1,M2,M1 / M2);break;

    case '§': {if (M2==0) Console.WriteLine("Cannot divide {0}by zero",M1 );       

    else Console.WriteLine("{0} § {1} = {2}",M1,M2,M1 § M2);break; 

    default: {Console.WriteLine(" Невалиден знак ");};break;

    }

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}