#include <iostream>
using namespace std;
int main() {
const int n = 6 ;
int a[n][n];
for ( size_t i = 0 ; i <n ; i++){
for ( size_t j = 0 ; j < n ; j++){
a[i][j] = j;
cout << a[i][j] << " " ;
}
cout << endl ;
}
int k , x = 0 , y = n-1 ;
for ( size_t j = 0 ; j <= n/2-1 ; j++){
for ( size_t i = 0 ; i < n ; i++){
k = a[i][j];
a[i][j] = a[x][y];
a[x][y] = k ;
x = x + 1 ;
}
y = y - 1 ;
x=0;
}
cout << "----------" << endl ;
for ( size_t i = 0 ; i <n ; i++){
for ( size_t j = 0 ; j < n ; j++){
cout << a[i][j] << " " ;
}
cout << endl ;
}
return 0;
}
