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 PyPy3 (2.4.0) (judge verdict: Accepted)

from itertools import combinations
n = int(input())
i = 1
plus = 1
flg = False
while i <= n:
    if i == n:
        flg = True
        break
    plus += 1
    i += plus
if flg:
    print("Yes")
    res = {i : [] for i in range(plus+1)}
    for i, combi in enumerate(combinations(range(plus + 1), 2), 1):
        res[combi[0]].append(str(i))
        res[combi[1]].append(str(i))
    print(plus + 1)
    for i, val in res.items():
        print(str(plus) + " " + " ".join(val))
else:
    print("No")