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

var
    A, B, C, K : LongInt;

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(A);

    ReadLn(B);

    ReadLn(C);

    K := 0;

    { INSERT YOUR CODE HERE }


    WriteLn(K);

end.