Grid
Description
The input contains $21$ lines, each containing $21$ characters $\texttt{0}$ or $\texttt{1}$.
Input
The input contains $21$ lines, each containing $21$ characters $\texttt{0}$ or $\texttt{1}$.
111111101011101111111
100000100011001000001
101110101101001011101
101110101100101011101
101110101001001011101
100000100111101000001
111111101010101111111
000000000001100000000
111100101111110011101
000111010101100110101
111101101101001000011
001001000001000011000
111101110000111001011
000000001001001111100
111111100001101010000
100000100010010100111
101110100110110011100
101110101100000100010
101110101010110000100
100000101000011001001
111111101011111111100
12