public void Solve()
{
int N = Reader.Int();
var S = Reader.StringArray(N);
var M = new BinaryMatrix(N, N);
for (int r = 0; r < N; r++)
{
for (int c = 0; c < N; c++)
{
M[r, c] = S[r][c] - '0';
}
}
Console.WriteLine(M.GaussJordan(N) < N ? "Even" : "Odd");
}
