Mr. Kitayuta has just bought an undirected graph consisting of n vertices and m edges. The vertices of the graph are numbered from 1 to n. Each edge, namely edge i, has a color ci, connecting vertex ai and bi.

Mr. Kitayuta wants you to process the following q queries.

In the i-th query, he gives you two integers — ui and vi.

Find the number of the colors that satisfy the following condition: the edges of that color connect vertex ui and vertex vi directly or indirectly.

Input

The first line of the input contains space-separated two integers — n and m (2 ≤ n ≤ 100, 1 ≤ m ≤ 100), denoting the number of the vertices and the number of the edges, respectively.

The next m lines contain space-separated three integers — ai, bi (1 ≤ ai < bi ≤ n) and ci (1 ≤ ci ≤ m). Note that there can be multiple edges between two vertices. However, there are no multiple edges of the same color between two vertices, that is, if i ≠ j, (ai, bi, ci) ≠ (aj, bj, cj).

The next line contains a integer — q (1 ≤ q ≤ 100), denoting the number of the queries.

Then follows q lines, containing space-separated two integers — ui and vi (1 ≤ ui, vi ≤ n). It is guaranteed that ui ≠ vi.

Output

For each query, print the answer in a separate line.

Examples

Input

4 5
1 2 1
1 2 2
2 3 1
2 3 3
2 4 3
3
1 2
3 4
1 4


Output

2
1
0


Input

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


Output

1
1
1
1
2

Note

Let's consider the first sample. 

<image> The figure above shows the first sample. 

  * Vertex 1 and vertex 2 are connected by color 1 and 2. 
  * Vertex 3 and vertex 4 are connected by color 3. 
  * Vertex 1 and vertex 4 are not connected by any single color. 
2 1
1 2 1
1
1 2
 2 3
1 2 3
1 2 2
1 2 1
1
1 2
 2 5
1 2 1
1 2 2
1 2 3
1 2 4
1 2 5
1
1 2

1
 3
 5

import java.util.*;
public class _505B_Mr_Kitayuta_s_Colorful_Graph{
static Lista A[];
static int x,y,c;
static boolean Encon[];
    public static void  calcula(int i){
    	A[i].M[x][c]= true;
    	if(i!=y){
    	if(!A[i].t){  
    	A[i].t=true;
             if(!A[i].M[y][c]){
            	for (int j = 0; j < A[i].colour[c].size() && !Encon[c]; j++){
					int h = A[i].colour[c].remove();
					A[i].colour[c].add(h);
						calcula(h);
				}
            	if(Encon[c])A[i].M[y][c]= true;
             }else{
            	 Encon[c]=true;
             }
             A[i].t=false;
    	  }
    	}else 
    	Encon[c]= true;
    }
	public static void main(String[] args){
     Scanner leer = new Scanner(System.in);
     int n = leer.nextInt();
     int m = leer.nextInt();
     A = new Lista[n+1];
     for (int i = 1; i <=n; i++) 
		A[i]= new Lista(n,m);
     
     for (int i = 0; i < m; i++){
		 x = leer.nextInt();
		 y = leer.nextInt();
		 c = leer.nextInt();
		 A[x].add(y);
		 A[y].add(x);
	 }
     
     int q = leer.nextInt();
     for (int i = 0; i < q; i++){
		x= leer.nextInt();
		y= leer.nextInt();
	    int h;
	    if(y<x){h=y;y=x;x=y;}
	    h=0;
	    Encon= new boolean [m+1];
	    for (int j = 0; j < A[x].C.size(); j++) {
			c = A[x].C.remove();
			A[x].C.add(c);
			for (int j2 = 0; j2 < A[x].colour[c].size() && !Encon[c]; j2++) {
				int g = A[x].colour[c].remove();
				A[x].colour[c].add(g);
				calcula(g);
			}
			if(Encon[c])h++;
		}
	    System.out.println(h);
	 }
	}

	static class Lista{
		LinkedList<Integer> colour[];
		LinkedList<Integer> C;
		boolean M[][];
		boolean t;
		public Lista(int n, int m){
			colour= new LinkedList[m+1];
			M= new boolean[n+1][m+1];
			C= new LinkedList<Integer>();
			t = false;
		}
		public void add(int h){
			if(colour[c]==null)
			{	colour[c]= new LinkedList<Integer>();
			    C.add(c);
			}
			colour[c].add(h);
			M[h][c]=true;
		}
	}
}

