import java.util.*; public class Main{ public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int cnt = 0; for(int m=1;m<=n;m++){ if(n<(m*(m+1))/2) break; if(m%2==1){ if(n%m==0) cnt++; } else{ if((2*n)%m==0&&((2*n)/m)%2==1) cnt++; } } System.out.println(cnt); } }