import sys
input = sys.stdin.readline

N = int(input())
edges = []

star_id = {}
for i in range(2, N + 1):
    edges.append((1, i, i * i))
    star_id[i] = len(edges)

chain_id = {}
for i in range(2, N):
    edges.append((i, i + 1, 2 * i + 1))
    chain_id[i] = len(edges)

print(len(edges))

for u, v, w in edges:
    print(u, v, w)

for i in range(1, N):
    for j in range(i + 1, N + 1):
        path = []
        if i == 1:
            path.append(star_id[j])
        else:
            for k in range(i, j):
                path.append(chain_id[k])
        print(len(path), *path)