program ideone;
var
n: integer;
n1, n2, S, P: real;
begin
	write('n='); read(n);
	n1:= n mod 10;
	n:= n div 10;
	n2:= n mod 10;
	n:= n div 10;
	S:= 23*10+1;
	P:= 2*100+3*10+1;
	write(round(P));
end.