Problem: You are given an integer L. Construct a directed graph that satisfies the conditions below. The graph may contain multiple edges between the same pair of vertices. It can be proved that such a graph always exists.

* The number of vertices, N, is at most 20. The vertices are given ID numbers from 1 to N.
* The number of edges, M, is at most 60. Each edge has an integer length between 0 and 10^6 (inclusive).
* Every edge is directed from the vertex with the smaller ID to the vertex with the larger ID. That is, 1,2,...,N is one possible topological order of the vertices.
* There are exactly L different paths from Vertex 1 to Vertex N. The lengths of these paths are all different, and they are integers between 0 and L-1.



Here, the length of a path is the sum of the lengths of the edges contained in that path, and two paths are considered different when the sets of the edges contained in those paths are different.

Constraints

* 2 \leq L \leq 10^6
* L is an integer.

Input

Input is given from Standard Input in the following format:


L


Output

In the first line, print N and M, the number of the vertices and edges in your graph. In the i-th of the following M lines, print three integers u_i,v_i and w_i, representing the starting vertex, the ending vertex and the length of the i-th edge. If there are multiple solutions, any of them will be accepted.

Examples

Input

4


Output

8 10
1 2 0
2 3 0
3 4 0
1 5 0
2 6 0
3 7 0
4 8 0
5 6 1
6 7 1
7 8 1


Input

5


Output

5 7
1 2 0
2 3 1
3 4 0
4 5 0
2 4 0
1 3 3
3 5 1

Solution (in JAVA):

Solution:
import java.io.*;
import java.util.*;
import java.util.List;

class Main {
    static Scanner scanner = new Scanner();

    public static void main(String[]$) throws IOException {
        int l = scanner.nextInt();
        int r = Integer.toBinaryString(l).length() - 1;
        System.out.println(r + 1);
        List<Edge> edges = new ArrayList<>();
        for (int i = 0; i < r; i++) {
            edges.add(new Edge(i + 1, i + 2, 0));
            edges.add(new Edge(i + 1, i + 2, 1 << i));
        }
        for (int i = r; i > 0; i--) {
            int j = l - (1 << i - 1);
            if (j >= 1 << r) {
                edges.add(new Edge(i, r + 1, j));
                l = j;
            }
        }
        System.out.println(edges.size());
        for (Edge edge : edges) {
            System.out.println(edge);
        }
    }

    static class Edge {
        int to;
        int from;
        int cost;

        Edge(int to, int from, int cost) {
            this.to = to;
            this.from = from;
            this.cost = cost;
        }

        @Override
        public String toString() {
            return String.format("%s %s %s", to, from, cost);
        }
    }

    static class Scanner {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in), 1 << 15);
        StringTokenizer tokenizer;

        String next() throws IOException {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                tokenizer = new StringTokenizer(reader.readLine());
            }
            return tokenizer.nextToken();
        }

        int nextInt() throws IOException {
            return Integer.parseInt(next());
        }

        long nextLong() throws IOException {
            return Long.parseLong(next());
        }
    }
}