#include <stdio.h>

int main(){
	unsigned int n,i;
	
	scanf("%u",&n);
	/* Varijanta 1
	for(i=0; i<n; i++){
		if(i%2==1)
			printf("%u\n",i);	
	}*/

	/* Varijanta 2 */
	for(i=1; i<n; i+=2)
		printf("%u\n",i);
	
	return 0;
}