7 21
-1 -8 8 2 3 2 8 8 -4 -2 3 4 -7 1 -2 -9 -7 -8 7 1 5 
-6 1 3 -5 6 -2 4 3 3 8 -9 -5 4 -8 0 -1 7 -8 6 5 0 
4 -1 5 -8 7 3 3 8 -6 -6 -1 0 -4 4 9 5 -8 7 8 -4 -3 
0 6 -8 8 5 1 7 -5 -7 6 1 -7 8 0 8 8 -1 -5 -7 6 -8 
5 0 -8 7 -5 -2 1 -6 9 4 -3 0 9 0 1 7 8 -7 -1 -8 0 
8 -4 1 2 2 -1 5 3 4 -7 -1 0 7 5 6 -8 3 6 8 8 -8 
-4 -6 2 0 3 8 4 -4 0 0 -5 -7 -1 6 -4 -5 -2 5 -3 1 3