lab 7 z2

#include <iostream>
int main()
{
    using namespace std;
    int n,m;
    cin >> n >> m;
    int mas [n] [m];
    for (int i=0; i<n; i++)
    for (int j=0; j<m; j++)
    cin >> mas [i][j];
    for (int i=0; i<n; i++)
    for (int j=0; j<m; j++)
    {
        if ((i<n-j)||((j>=4)&&(i<=j)&&(i>=n-j)))
        mas [i][j]=1;}
        for (int i=0; i<n; i++)
    {   cout <<endl;
    for (int j=0; j<m; j++)
    cout <<mas [i][j];}
    return 0;
}