% Strimko Weekly Set 070
n = 5;
% streams = array2d(1..n, 1..n*2, [
%                    1,1, 2,2, 2,3, 3,4, 2,5,
%                    1,2, 2,1, 3,1, 4,2, 3,2,
%                    1,3, 1,4, 1,5, 2,4, 3,3,
%                    4,1, 5,1, 5,2, 5,3, 4,3,
%                    3,5, 4,4, 5,4, 5,5, 4,5
%                   ]);

streams = array2d(1..n, 1..n, [
                    1,2,3,3,3,
                    2,1,1,3,1,
                    2,2,3,1,4,
                    5,2,5,4,4,
                    5,5,5,4,4,
                  ]);
num_placed = 4;
placed = array2d(1..num_placed, 1..3, [
                    1,1,1,
                    2,5,4,
                    4,1,2,
                    5,4,5
                 ]);