int main()
{
	foo0:
	bar0:
		puts("0");

	if (main)
		foo1:
		bar1:
			puts("1");

	if (main)
		main();
	else
		foo2:
		bar2:
			puts("2");

	for(;;)
		foo3:
		bar3:
			puts("3");

	while(main)
		foo4:
		bar4:
			puts("4");

	do
		foo5:
		bar5:
			puts("5");
	while(main);
}