{ NOTE: it is recommended to use this even if you don't understand the following code }

var
    M, N, res : LongInt;
    A         : Int64;

begin
{
    uncomment the two following lines if you want to read/write from files
    assign(input,  'input.txt');  reset(input);
    assign(output, 'output.txt'); rewrite(output);
}

    ReadLn(N, M, A);

    res := 0;

    { INSERT YOUR CODE HERE }


    WriteLn(res);

end.