code

#include <iostream>
using namespace std;

int main()
{
    int vertex, edges;
    cin>>vertex>>edges;
    // declaring adjacency matrix
    int adjMatrix[vertex][vertex]= {{0,0}};
    //Taking input and making the cells which corresponds to the edges as 1 in the adjacency matrix
    for(int i=0; i<edges; i++){
        int vertex1,vertex2;
        cin>> vertex1 >> vertex2;
        adjMatrix[vertex1-1][vertex2-1] = 1;
        adjMatrix[vertex2-1][vertex1-1] = 1;
    }
    // Getting output
    for(int i=0; i<vertex; i++){
        for(int j=0; j<vertex; j++){
            cout<<adjMatrix[i][j]<<" ";
        }
        cout<<"\n";
    }

    return 0;
}