function find_pool(N, M, P: longint; var A, B: array of longint): longint;
begin
    (* insert your code here *)
    find_pool := 42;
end;


const
    MAXN = 200000;
var
    N, M, P, i : longint;
    A, B       : array[0..MAXN-1] of longint;
    fr, fw     : text;

begin
    assign(fr, 'input.txt');
    assign(fw, 'output.txt');
    reset(fr);
    rewrite(fw);
    readln(fr, N, M, P);
    for i:=0 to N-1 do
        readln(fr, A[i], B[i]);

    writeln(fw, find_pool(N, M, P, A, B));
    close(fr);
    close(fw);
end.