## hhttps://yukicoder.me/problems/no/3506


def main():
    N = int(input())

    edges = []
    edges.append((1, 2, 1))
    for i in range(2, N):
        edges.append((1, i + 1, 4))
    for i in range(2, N):
        edges.append((1, i + 1, 8))
    
    ij_map = {}
    ij_map[(0, 1)] = [1]
    for j in range(2, N):
        ij_map[(0, j)] = [j]
    for j in range(2, N):
        ij_map[(1, j)] = [1, N + (j - 2)]
    for i in range(2, N):
        for j in range(i + 1, N):
            ij_map[(i, j)] = [N + (i - 2), N + (j - 2)]
    
    ij_array = [(key, value) for key, value in ij_map.items()]
    ij_array.sort(key=lambda x : x[0])

    print(len(edges))
    for u, v, w in edges:
        print(u, v, w)
    for _, value_seq in ij_array:
        print(len(value_seq), " ".join(map(str, value_seq)))
    




if __name__ == '__main__':
    main()