var a:integer; k:integer;begin k:=0; while k<=5 do begin write('a='); read (a); if (a mod 2=0) then writeln(sqr(a)); k:=k+1; end;end.
var a:integer; k:integer;
begin
k:=0;
while k<=5 do
begin
write('a='); read (a);
if (a mod 2=0) then
writeln(sqr(a));
k:=k+1;
end;
end.