#include <stdio.h>
int main()
{
	int n = 0,i,k;
	while (n <= 0)
	{
		printf("Vui long nhap n:");
		scanf_s("%d", &n);
	}
	if (n == 1)
		printf("Uoc so le lon nhat cua n la : 1");
	for (i = n-1; i >= 1; i--)
	{
		k = n % i;
		if (k == 0&&i%2==1)
		{
			printf("Uoc so le lon nhat cua n la :%d", i);
			break;
		}
	}
	return 1;
}