"""
distinct をごどくしていました。すみません。
"""

from math import isqrt
from collections import deque
import sys

mod = 998244353
input = sys.stdin.readline
II = lambda : int(input())
MI = lambda : (int(_) for _ in input().split())
LI = lambda : list(int(_) for _ in input().split())
SI = lambda : input()

n = II()

e = []
for i in range(1, n):
    e.append((i, i+1, 2*i-1))

for i in range(3, n+1):
    e.append((2, i, 2*i-2))

assert len(e) <= 2 * n - 3 
print(len(e))
for u, v, c in e:
    print(u, v, c)

for i in range(1, n+1):
    for j in range(i+1, n+1):
        if i == 1:
            print(j-1, *range(1, j))
            continue
        
        p = [*reversed(range(2, i))] + [n-2+i] + [*range(i+1, j)]
        print(len(p), *p)