function p(y)
	return (y + int(y/4) - int(y/100) + int(y/400)) mod 7
end function

function isLongYear(y)
	return (p(y) = 4) or (p(y - 1) = 3)
end function

for y = 2000 to 2100
	if isLongYear(y) then print y
next y
end