divide_by_9

#include <iostream>

unsigned __attribute__ ((noinline)) f(unsigned a)
{
  return a/9;
	.cfi_startproc
	movl	%edi, %eax
	movl	$954437177, %edx
	mull	%edx
	shrl	%edx
	movl	%edx, %eax
	ret
	.cfi_endproc
}

int main()
{
  unsigned a;
  std::cin >> a;
  unsigned b = f(a);
  std::cout << b << std::endl;
}