#include<bits/stdc++.h>
using namespace std;
 
int main()
{
    int n, e;
    cin>>n>>e;
    long long int graph[n+1][n+1];
    for(int i = 1; i <= n; i++)
    {
        for(int j = 1; j <= n; j++)
        {
            if(i == j)graph[i][j] = 0;
            else graph[i][j] = INT_MAX;
        }
    }
    int u, v, w;
    for(int i = 1; i <= e; i++)
    {
        cin>>u>>v>>w;
        graph[u][v] = w;
    }
    cout<<"A0"<<endl;
    for(int p = 1; p <= n; p++)
    {
        for(int q = 1; q <= n; q++)
        {
            cout<<graph[p][q]<<" ";
        }
        cout<<endl;
    }
 
 
    for(int k = 1; k <= n; k++)
    {
        cout<<"A"<<k<<endl;
        for(int i = 1; i <= n; i++)
        {
            for(int j = 1; j <= n; j++)
            {
                graph[i][j] = min(graph[i][j], graph[i][k]+graph[k][j]);
            }
        }
        for(int p = 1; p <= n; p++)
        {
            for(int q = 1; q <= n; q++)
            {
                cout<<graph[p][q]<<" ";
            }
            cout<<endl;
        }
 
    }
 
 
 
 
 
 
 
}
 

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

NCA3ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMSAyIDMgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMiAxIDggICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMiAzIDIgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMyAxIDUgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMyA0IDEgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMSA0IDcgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgNCAxIDIg

4 7                                                                              1 2 3                                                                            2 1 8                                                                            2 3 2                                                                            3 1 5                                                                            3 4 1                                                                            1 4 7                                                                            4 1 2