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
{
    static int INF = 1000 + (int) 1e9;

    // color[i] == color[j] iff the cost b/w i and j is free (could be indirect)
    static int[] color;

    // dist[i][j] = the distance b/w color i and color j
    static int[][] dist;

    // seen[i] = whether dfs has seen i.
    static boolean[] seen;

    // currentColor to fill in 
    static int currentColor = 1;

    // free.get(i) = the list of bacterias that can be reached from i for free.
    static ArrayList<ArrayList<Integer>> free = new ArrayList<ArrayList<Integer>>();


    static void dfs(int n)
    {
        seen[n] = true;
        color[n] = currentColor;
        for (Integer m : free.get(n))
        {
            if (! seen[m])
            {
                dfs(m);
            }
        }
    }

    
    public static void main(String[] args)
    {
        FastScanner in = new FastScanner();
//      Scanner in = new Scanner(System.in);

/*
 * get input
 */

        // n, m, k
        int n = in.nextInt();
        int m = in.nextInt();
        int k = in.nextInt();

        // initialize color, dist, seen
        color = new int[n + 5];
        seen  = new boolean[n + 5];
        dist  = new int[k + 5][k + 5];

        // c_1, ... , c_k
        int[] c = new int[k + 5];
        for (int i = 1; i <= k; i++)
            c[i] = in.nextInt();
        int[] type = new int[n + 5];
        int[] firstInType = new int[k + 5];
        int sum = 0;
        for (int i = 1; i <= k; i++)
        {
            firstInType[i] = sum + 1;
            for (int j = 1; j <= c[i]; j++)
            {
                type[sum + j] = i;
            }
            sum += c[i];
        }


        // initialize dist
        for (int i = 1; i <= k; i++)
            for (int j = 1; j <= k; j++)
                dist[i][j] = INF;


        // initialize free
        for (int i = 0; i <= n; i++)
            free.add(new ArrayList<Integer>());

        // each method
        // record in free and dist
        for (int i = 0; i < m; i++)
        {
            int u = in.nextInt();
            int v = in.nextInt();
            int cost = in.nextInt();
            if (cost == 0)
            {
                free.get(u).add(v);
                free.get(v).add(u);
            }
            if (cost < dist[type[u]][type[v]])
            {
                dist[type[u]][type[v]] = cost;
                dist[type[v]][type[u]] = cost;
            }
        }


//        for (int[] row : dist)
//            System.out.println(Arrays.toString(row));


        // dfs
        for (int i = 1; i <= n; i++)
        {
            if (! seen[i])
            {
                dfs(i);
                currentColor ++;
            }
        }
//        System.out.println(Arrays.toString(color));

        // check whether it's "right"
        for (int i = 1; i <= n; i++)
        {
            if (color[i] != color[firstInType[type[i]]])
            {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
        StringBuilder sb = new StringBuilder();
                
        // find the shortest distance for each
        for (int middle = 1; middle <= k; middle ++)
        {
            for (int u = 1; u <= k; u++)
            {
                for (int v = 1; v <= k; v++)
                {
                    int newDistance = dist[u][middle] + dist[middle][v];
                    if (dist[u][v] > newDistance)
                    {
                        dist[u][v] = newDistance;
                        dist[v][u] = newDistance;
                    }
                }
            }
        }

        for (int u = 1; u <= k; u++)
        {
            for (int v = 1; v <= k; v++)
            {
                if (u == v)
                    sb.append(0);
                else
                    sb.append(dist[u][v] == INF ? -1 : dist[u][v]);
                if (v + 1 <= k)
                    sb.append(" ");
                else
                    sb.append("\n");
            }
        }
        System.out.print(sb);
    }
}
class FastScanner
{
    BufferedReader reader;
    StringTokenizer tokenizer;

    public FastScanner()
    {
        reader = new BufferedReader(new InputStreamReader(System.in));
    }
    public String nextToken()
    {
        while (tokenizer == null || ! tokenizer.hasMoreTokens())
        {
            String line = null;
            try {
                line = reader.readLine();
            } catch (Exception e) {}
            tokenizer = new StringTokenizer(line);
                
        }
        return tokenizer.nextToken();
    }
    public int nextInt()
    {
        return Integer.parseInt(nextToken());
    }
}