Problems
Матриця 2
include <bits/stdc++.h>
define ll long long
define str string
using namespace std; int main(){
ll n, m = 0;
cin>>n;
ll arr[n][n];
for(int i = 0; i<n; i++){
for(int j = 0; j<n; j++){
if((i%2 == 0 && j%2 == 0) || (i%2 != 0 && j%2 != 0)){
arr[i][j]=0;
}
else{
arr[i][j]=1;
}
}
}
for(int i = 0; i<n; i++){
cout<<endl;
for(int j = 0; j<n; j++){
cout<<arr[i][j];
}
}
}