Problem: Dima took up the biology of bacteria, as a result of his experiments, he invented k types of bacteria. Overall, there are n bacteria at his laboratory right now, and the number of bacteria of type i equals ci. For convenience, we will assume that all the bacteria are numbered from 1 to n. The bacteria of type ci are numbered from <image> to <image>.

With the help of special equipment Dima can move energy from some bacteria into some other one. Of course, the use of such equipment is not free. Dima knows m ways to move energy from some bacteria to another one. The way with number i can be described with integers ui, vi and xi mean that this way allows moving energy from bacteria with number ui to bacteria with number vi or vice versa for xi dollars.

Dima's Chef (Inna) calls the type-distribution correct if there is a way (may be non-direct) to move energy from any bacteria of the particular type to any other bacteria of the same type (between any two bacteria of the same type) for zero cost.

As for correct type-distribution the cost of moving the energy depends only on the types of bacteria help Inna to determine is the type-distribution correct? If it is, print the matrix d with size k × k. Cell d[i][j] of this matrix must be equal to the minimal possible cost of energy-moving from bacteria with type i to bacteria with type j.

Input

The first line contains three integers n, m, k (1 ≤ n ≤ 105; 0 ≤ m ≤ 105; 1 ≤ k ≤ 500). The next line contains k integers c1, c2, ..., ck (1 ≤ ci ≤ n). Each of the next m lines contains three integers ui, vi, xi (1 ≤ ui, vi ≤ 105; 0 ≤ xi ≤ 104). It is guaranteed that <image>.

Output

If Dima's type-distribution is correct, print string «Yes», and then k lines: in the i-th line print integers d[i][1], d[i][2], ..., d[i][k] (d[i][i] = 0). If there is no way to move energy from bacteria i to bacteria j appropriate d[i][j] must equal to -1. If the type-distribution isn't correct print «No».

Examples

Input

4 4 2
1 3
2 3 0
3 4 0
2 4 1
2 1 2


Output

Yes
0 2
2 0


Input

3 1 2
2 1
1 2 0


Output

Yes
0 -1
-1 0


Input

3 2 2
2 1
1 2 0
2 3 1


Output

Yes
0 1
1 0


Input

3 0 2
1 2


Output

No

Solution (in JAVA):

Solution:

import java.util.*;
import java.io.*;
public class Main {
    
    /*
     * A good union find implementation. Nodes are numbered 0 through n-1.
     * Initially every node is its own parent i.e. par[i]=i;
     */
    static class unionFind {
        public static int par[]; //parent array for vertices

        public unionFind(int n) {
            par = new int[n];
            for (int i = 0; i < n; i++) {
                par[i] = i;
            }
        }

        public static int root(int a) //to find the root of a node
        {
            if (par[a] == a) //the node is the root
                return a;
            par[a] = root(par[a]); //find the root of the parent and path-compress
            return par[a];

        }

        public static boolean merge(int a, int b) {
            int A = root(a);
            int B = root(b);
            if (A == B)
                return false; //merge returns false if they are in the same tree
            if (((int) (Math.random() * 10000) & 1) == 1) //else, assign parent of a=root of b randomly
                par[B] = a;
            else
                par[A] = b;
            return true;
        }

    }
    
    /*
     * Given a weighted directed graph in the form of an adjacency matrix,
     * computes the 2D array "distance" where distance[j][k] is the minimum 
     * distance between nodes j and k. The value of adjMatrix[i][j] should be
     * Integer.MAX_VALUE if there is no directed edge between nodes i and j.  
     */
    private static int[][] floydWarshall(int[][] adjMatrix) {
        int N = adjMatrix.length;
        int[][] distance = adjMatrix;
        
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                for (int k = 0; k < N; k++) {
                    if (distance[j][i] != Integer.MAX_VALUE
                            && distance[i][k] != Integer.MAX_VALUE)
                        distance[j][k] = Math.min(distance[j][k],
                                distance[j][i] + distance[i][k]);
                }
            }
        }
        return distance;
    }
    static int min(int a, int b){
        if (a<b)return a;
        return b;
    }
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());
        int k = Integer.parseInt(st.nextToken());
        int c[] = new int[k];
        
        st = new StringTokenizer(br.readLine());
        for(int i=0; i<k; i++)
            c[i] = Integer.parseInt(st.nextToken());
        
        int strt[] = new int[k];
        int end[] = new int[k]; //inclusive...
        int l = 0;
        for(int i=0; i<k; i++){
            strt[i] = l+1; end[i] = strt[i]+c[i]-1;
            l = end[i];
            strt[i]--; end[i]--;
        }
        
        
        int type[] = new int[n];
        for(int i=0; i<k; i++){
    //      System.out.println(i + " " + strt[i] + " " + end[i]);
            for(int j=strt[i]; j<=end[i]; j++){
                type[j] = i;
            }
        }
//      System.out.println("types"); 
//  
//      for(int i=0; i<n; i++){
//          System.out.print(type[i] + " ");
//      }
//      System.out.println("");
//      
        int mat[][] = new int[k][k];
        for(int i=0; i<k; i++){
            for(int j=0; j<k; j++){
                mat[i][j] = Integer.MAX_VALUE;
            }
        }
        
        unionFind UF = new unionFind(n);
        for(int i=0; i<m; i++){
            String str[] = br.readLine().split(" ");
            int u = Integer.parseInt(str[0])-1;
            int v = Integer.parseInt(str[1])-1;
            int x = Integer.parseInt(str[2]);
            
            if(x == 0){
                UF.merge(u, v);
            }
            mat[type[u]][type[v]] = min(x, mat[type[u]][type[v]]);
            mat[type[v]][type[u]] = min(x, mat[type[v]][type[u]]);
        }
        //now check for each one's root...
        
        
        
        for(int t=0; t<k; t++){
            int check = UF.root(strt[t]);
            for(int i=strt[t]+1; i<=end[t]; i++){
                if (check != UF.root(i)){
                    System.out.println("No");
                    System.exit(0);
                }
            }
        }
        //now floyd warshall....
        
        for(int i=0; i<k; i++){
            mat[i][i] = 0;
        }
        
        mat = floydWarshall(mat);
        
        System.out.println("Yes");
        for(int i=0; i<k; i++){
            for(int j=0; j<k; j++){
                if (mat[i][j] == Integer.MAX_VALUE)
                    System.out.print("-1 ");
                else
                    System.out.print(mat[i][j]+" ");
            }
            System.out.println("");
        }
        
        
        
    }
}