M=100;
N=100;
K=41;
L=40;
D=100;
students=[|82,37,81,37|
63,57,63,58|
66,1,67,1|
9,80,9,81|
97,92,98,92|
50,40,51,40|
23,98,23,99|
80,39,80,40|
27,40,26,40|
21,57,22,57|
5,74,4,74|
62,46,62,47|
78,20,78,19|
96,70,96,71|
89,93,90,93|
45,70,45,69|
64,43,63,43|
96,46,95,46|
48,32,47,32|
88,56,87,56|
56,79,56,78|
80,76,80,77|
66,3,66,4|
18,23,19,23|
32,22,32,23|
53,55,54,55|
75,44,74,44|
61,34,60,34|
99,62,99,61|
55,13,55,14|
76,76,76,77|
13,3,13,2|
52,28,52,27|
92,57,91,57|
33,96,33,95|
4,93,4,92|
51,47,51,48|
43,16,43,17|
85,72,85,71|
4,39,3,39|
64,88,64,87|
22,64,22,63|
72,1,73,1|
38,17,37,17|
86,72,86,71|
57,91,56,91|
8,15,9,15|
42,29,43,29|
29,4,29,3|
58,27,58,26|
37,76,38,76|
71,41,71,40|
82,68,83,68|
28,8,27,8|
7,26,7,25|
83,100,83,99|
27,73,27,74|
67,100,66,100|
71,54,71,55|
66,46,65,46|
4,67,5,67|
5,19,5,18|
79,64,79,65|
30,3,30,2|
55,79,56,79|
100,77,100,78|
61,28,61,29|
5,24,4,24|
74,81,75,81|
52,85,51,85|
96,36,97,36|
79,57,79,56|
27,34,28,34|
100,48,100,47|
61,47,61,48|
42,74,42,73|
63,56,62,56|
69,69,68,69|
53,42,53,41|
82,45,82,44|
80,34,79,34|
35,30,34,30|
86,29,87,29|
84,75,85,75|
29,82,29,83|
87,95,88,95|
51,85,50,85|
35,37,36,37|
94,25,94,24|
17,50,17,51|
12,43,11,43|
69,29,70,29|
68,22,69,22|
41,71,42,71|
83,4,83,3|
68,53,69,53|
56,2,57,2|
39,69,38,69|
1,55,2,55|
8,32,8,31|];