x in [1,1200): violations of W_x >= L_x: [] count 0
 x 10 min walk len through col x 4  L_x 3  w(x)+1 4
 x 20 min walk len through col x 4  L_x 4  w(x)+1 4
 x 50 min walk len through col x 5  L_x 4  w(x)+1 5
 x 100 min walk len through col x 6  L_x 5  w(x)+1 6
 x 500 min walk len through col x 9  L_x 8  w(x)+1 9
 x 1000 min walk len through col x 11  L_x 9  w(x)+1 12
 x 1199 min walk len through col x 12  L_x 10  w(x)+1 12
