#include<iostream>
#include<stdio.h>
#include<conio.h>

using namespace std;
FILE *graph;
int n,//количество вершин
    m;//количество ребер
int **ms;
int v,u,w;//начальная вершина,конечная, вес ребра

void read()
{
    if(fopen("graph.txt","r")==NULL)cout<<"ERROR\n";
    graph=fopen("graph.txt","r");
    fscanf(graph,"%i",n);
    fscanf(graph,"%i",m);
    ms=new int*[n];
    for(int i=0;i<n;i++) ms[i]=new int[n];
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
            ms[i][j]=0;
    while(!feof(graph))
    {
        fscanf(graph,"%i",v);fscanf(graph,"%i",u);fscanf(graph,"%i",w);
        if (w<0) cout<<"This program can't work right with weight<0";
        else
            ms[v][u]=w;
    }
    //вывод матрицы
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
            cout<<ms[i][j]<<" ";
    cout<<endl;
}

void main()
{
    int key;
    system("cls");
    do{
    cout<<"MENU\n";
    cout<<"1.Read your graph\n";
    cin>>key;
    switch(key)
        {case 1:{ read();break;}
        }
    }while(key!=0);
}