[백준] 2018번

 

 

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int count = 1, startIndex = 1, endIndex = 1, sum = 1;

        while(endIndex != N) {
            if (sum == N) {
                count++;
                endIndex++;
                sum += endIndex;
            } else if (sum > N) {
              sum -= startIndex;
              startIndex++;
            } else {
                endIndex++;
                sum += endIndex;
            }
        }

        System.out.println(count);
    }
}