num_strings=4;
max_length_strings=20;
max_length_median=20;
max_char=4;
strings=[|4,4,3,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0|2,3,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0|4,4,4,4,4,3,4,4,2,0,0,0,0,0,0,0,0,0,0,0|2,3,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0|];
str_length=[5,3,9,3];