Problem:
Score : 500 points

Problem Statement

You are given an integer N. Determine if there exists a tuple of subsets of \{1,2,...N\}, (S_1,S_2,...,S_k), that satisfies the following conditions:

Each of the integers 1,2,...,N is contained in exactly two of the sets S_1,S_2,...,S_k.

Any two of the sets S_1,S_2,...,S_k have exactly one element in common.

If such a tuple exists, construct one such tuple.

Constraints

1 \leq N \leq 10^5

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If a tuple of subsets of \{1,2,...N\} that satisfies the conditions does not exist, print No.
If such a tuple exists, print Yes first, then print such subsets in the following format:

k
|S_1| S_{1,1} S_{1,2} ... S_{1,|S_1|}
:
|S_k| S_{k,1} S_{k,2} ... S_{k,|S_k|}

where S_i={S_{i,1},S_{i,2},...,S_{i,|S_i|}}.

If there are multiple such tuples, any of them will be accepted.

Sample Input 1

3

Sample Output 1

Yes
3
2 1 2
2 3 1
2 2 3

It can be seen that (S_1,S_2,S_3)=(\{1,2\},\{3,1\},\{2,3\}) satisfies the conditions.

Sample Input 2

4

Sample Output 2

No

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.*;

public class Main {
    static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        int n = scanner.nextInt();
        for (int i = 1; i <= n; i++) {
            if (i * (i + 1) / 2 == n) {
                System.out.println("Yes");
                System.out.println(i + 1);
                int[][] array = new int[i + 1][i];
                for (int j = 0, a = 1; j <= i; j++) {
                    for (int k = j; k < i; k++, a++) {
                        array[j][k] = array[k + 1][j] = a;
                    }
                    
                }
                for (int j = 0; j <= i; j++) {
                    System.out.print(i + " ");
                    for (int k = 0; k < i; k++) {
                        System.out.print(array[j][k] + " ");
                    }
                    System.out.println();
                }
                return;
            }
        }
        System.out.println("No");
    }
}