#include <iostream>
using namespace std;
int nCount;
int main()
{
cin >> nCount;
char uWay;
for (int nRow = 0; nRow < nCount; nRow++)
{
for (int nCol = 0; nCol < nCount; nCol++)
{
cin >> uWay;
}
}
cout << "NIE";
return 0;
}
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