m=50;
n=50;
students=[|0,41,85,72,38,80,69,65,68,96,22,49,67,51,61,63,87,66,24,80,83,71,60,64,52,90,60,49,31,23,99,94,11,25,24,51,15,13,39,67,97,19,76,12,33,99,18,92,35,74|
0,95,71,39,33,39,32,37,45,57,71,95,5,71,24,86,8,51,54,74,24,75,70,33,63,29,99,58,94,52,13,35,99,46,57,71,23,17,3,94,48,77,18,83,11,83,25,59,62,2|
78,86,7,94,65,80,32,39,84,60,65,72,61,58,84,8,72,12,19,47,49,49,59,71,52,34,22,21,20,92,33,80,39,74,9,28,97,100,93,29,25,4,66,79,81,98,21,91,62,82|
4,59,100,34,1,51,80,92,69,77,39,38,97,51,34,35,19,22,1,67,9,90,31,82,11,51,84,78,70,74,42,100,88,53,80,57,62,32,51,48,63,92,46,4,61,31,98,69,52,88|
20,68,41,48,79,97,98,56,44,73,3,63,100,87,87,41,79,64,83,63,1,21,72,24,9,75,51,25,53,77,0,52,30,96,93,32,89,70,89,55,71,79,40,10,64,80,30,19,62,67|
98,42,8,32,57,27,22,1,38,89,52,74,43,8,2,65,82,20,67,22,43,22,95,16,48,25,6,75,86,96,3,85,43,69,93,4,61,53,81,43,84,20,15,34,22,35,26,28,33,67|
19,79,19,45,8,13,51,0,86,68,18,47,82,3,16,80,0,18,39,22,5,26,65,70,21,92,66,65,14,6,46,46,21,32,80,35,86,6,67,29,42,71,14,77,55,3,1,14,38,71|
82,41,65,12,5,77,3,67,22,59,40,81,48,63,63,25,45,32,78,83,26,96,18,99,45,56,31,30,45,47,80,1,7,81,18,1,90,15,71,22,69,44,18,31,60,16,93,13,17,44|
97,98,51,46,42,22,47,72,97,24,52,55,59,25,100,28,5,14,76,32,41,97,61,32,20,0,2,8,41,52,77,35,22,98,78,92,68,29,82,33,28,16,5,9,21,13,26,39,59,69|
10,42,4,13,80,34,42,100,44,32,70,15,32,8,83,10,23,73,8,53,7,21,10,52,14,82,28,24,33,94,59,4,17,73,53,85,31,100,74,74,12,72,38,34,14,22,53,0,30,95|
3,52,79,41,36,81,25,24,67,48,95,44,7,96,77,90,48,92,45,78,93,95,38,71,4,83,79,64,89,0,76,81,34,66,1,13,58,4,40,5,24,17,6,65,13,13,76,3,20,8|
36,12,60,37,42,53,87,10,65,42,25,47,41,33,71,69,94,24,12,92,11,71,3,82,91,90,20,95,44,76,60,34,95,49,40,89,4,45,27,9,34,82,59,2,20,68,22,29,10,1|
23,19,47,16,76,47,49,90,94,10,18,55,69,14,26,59,77,73,8,21,72,1,74,76,51,94,44,24,98,71,77,59,9,12,49,38,72,22,55,35,61,16,48,41,21,67,74,92,4,7|
85,34,92,39,96,42,26,1,1,4,64,33,96,62,23,67,76,26,47,32,73,82,30,14,61,21,92,40,4,2,38,76,64,8,14,3,49,71,31,38,86,98,17,15,98,32,55,69,46,61|
3,44,67,50,44,76,0,45,23,25,11,82,99,11,39,50,40,21,52,17,60,44,90,44,6,16,38,3,41,43,56,26,24,0,9,90,36,50,13,42,88,87,66,32,28,73,94,52,11,35|
47,9,87,37,57,15,56,38,95,6,43,23,30,84,39,88,69,5,34,81,93,86,2,77,10,28,30,97,68,14,12,88,1,100,35,73,30,2,43,11,41,58,82,6,84,71,16,18,67,41|
100,92,78,57,7,35,69,56,76,13,93,26,26,38,21,96,7,88,2,60,17,54,95,26,2,0,21,87,11,96,36,83,88,31,24,24,62,14,88,84,39,22,17,84,96,1,78,91,53,9|
35,75,87,100,33,80,42,7,20,50,65,81,92,14,45,96,34,6,20,86,51,4,19,70,91,13,0,42,70,43,15,47,14,96,72,41,91,11,72,7,92,12,16,51,13,86,40,50,43,55|
26,7,1,70,18,71,99,49,55,94,78,40,59,20,96,34,6,28,85,42,70,62,63,32,34,97,80,49,47,50,73,85,63,20,29,0,19,91,84,58,55,33,4,68,55,12,38,49,9,13|
99,4,35,26,5,42,29,98,20,95,77,36,63,41,42,45,81,40,53,60,5,55,9,13,34,6,52,28,35,33,29,21,67,57,61,21,41,95,54,50,19,81,75,67,73,77,47,40,83,16|
28,3,13,15,87,30,22,39,49,42,52,83,100,7,67,27,30,62,47,76,4,19,13,25,78,55,4,21,48,42,59,59,47,26,47,92,67,49,2,27,67,76,44,44,23,69,83,100,64,44|
95,63,46,17,77,81,16,77,80,78,10,26,42,19,5,58,62,42,59,85,77,4,87,89,70,38,3,35,10,8,87,42,67,37,2,58,55,2,56,6,94,71,46,45,35,35,30,76,73,15|
15,7,0,73,14,51,91,5,58,52,27,78,32,68,98,13,39,71,85,40,40,36,17,28,80,79,76,53,90,26,73,7,71,61,25,3,46,97,71,64,76,21,22,25,97,27,7,70,92,99|
2,42,75,56,66,71,61,10,86,79,52,46,81,5,5,76,98,81,72,55,66,91,15,62,92,69,13,79,91,15,98,88,96,86,33,34,89,22,89,36,10,68,10,56,39,100,84,55,76,26|
15,76,0,0,79,35,31,64,91,88,74,8,34,28,19,70,93,4,19,41,40,42,7,66,51,55,76,16,70,3,56,64,95,64,93,52,97,21,72,82,47,57,2,57,7,96,54,66,8,67|
72,90,53,43,73,53,95,77,49,87,41,86,15,55,17,72,50,54,68,13,72,2,63,41,53,0,82,98,4,0,30,29,3,64,20,98,37,82,22,83,11,28,60,22,44,61,74,78,6,62|
51,35,14,92,38,18,18,96,91,14,14,39,98,82,2,79,63,80,91,16,71,82,40,12,75,94,67,38,98,50,20,65,4,55,61,26,40,15,96,22,68,26,36,15,44,61,31,70,4,23|
0,3,49,48,94,54,6,96,36,42,63,28,76,15,25,28,58,52,84,13,69,20,19,30,63,66,25,31,14,77,35,5,32,1,78,97,43,2,58,11,73,56,78,99,91,40,0,10,4,100|
18,14,85,20,76,66,56,62,57,35,79,43,61,32,60,41,37,32,63,13,76,98,76,88,41,16,45,29,55,32,50,96,31,58,92,43,71,4,55,3,22,7,54,91,2,100,84,18,32,73|
64,45,78,22,86,58,46,28,19,6,60,80,15,65,12,65,86,73,94,4,85,90,67,95,17,44,49,16,27,58,15,97,83,78,41,91,7,13,20,18,85,56,55,87,87,31,77,47,63,55|
18,81,35,0,14,5,46,34,94,7,11,97,74,37,34,7,65,45,62,69,83,38,85,39,96,100,89,44,86,28,26,24,18,23,78,45,10,4,24,69,95,43,66,52,32,79,93,68,11,63|
74,11,32,33,40,68,5,81,14,34,82,96,78,23,84,65,55,85,20,16,35,16,86,66,90,1,18,83,92,36,95,34,67,94,17,84,88,54,11,82,38,35,98,89,70,54,70,11,0,66|
31,21,69,79,56,5,89,0,28,95,11,40,61,8,5,40,34,96,67,60,66,39,15,59,74,41,55,69,51,56,4,91,21,93,2,21,8,21,12,64,61,38,80,54,9,95,32,57,88,66|
65,25,21,64,13,90,56,37,45,64,57,64,51,55,62,54,30,27,2,73,1,0,97,29,24,87,55,14,59,49,2,60,69,49,15,9,95,35,12,70,45,73,31,59,93,1,4,83,92,43|
38,66,24,6,18,52,35,50,28,36,79,63,82,36,15,81,85,2,87,63,32,13,60,76,42,11,6,51,92,3,76,62,48,78,29,72,78,40,49,49,69,43,9,98,5,91,57,44,25,15|
45,18,96,4,11,57,64,17,51,97,70,82,72,67,47,89,34,1,30,52,2,92,35,21,51,37,64,41,77,83,58,34,50,64,20,79,55,91,36,7,9,56,10,47,86,35,6,92,22,25|
66,24,26,20,10,70,12,21,21,100,78,61,19,47,60,84,72,19,5,44,59,38,90,60,75,24,57,44,70,26,88,73,69,31,63,25,66,47,56,27,37,2,49,59,45,72,18,91,94,4|
81,88,57,69,82,64,62,72,28,8,93,4,63,69,0,28,62,0,55,58,99,35,4,65,100,95,57,42,77,96,35,21,45,70,57,61,98,83,18,76,59,2,33,38,79,51,16,62,60,17|
46,77,96,16,67,96,12,29,73,94,85,7,58,95,23,56,58,48,78,22,69,57,39,79,75,86,44,12,76,3,53,66,66,82,68,32,89,84,56,18,29,34,57,31,36,55,27,46,68,7|
84,35,44,15,78,93,16,91,24,43,3,48,43,70,10,63,78,51,98,100,79,20,75,16,78,57,29,89,88,87,58,76,62,11,42,45,30,49,13,26,91,76,74,98,63,88,76,60,52,28|
86,93,29,85,84,5,25,43,70,29,25,61,78,5,80,9,65,7,39,44,91,42,60,38,54,19,31,94,87,68,46,57,52,91,16,95,90,73,32,4,1,92,17,68,67,49,33,3,5,1|
80,75,31,40,53,58,2,63,31,87,80,11,50,1,74,31,52,53,70,1,85,6,99,15,35,28,49,75,97,33,25,74,44,18,47,29,47,44,56,69,31,79,7,46,23,95,76,47,38,37|
97,79,79,47,60,75,5,23,48,97,70,67,2,83,57,58,90,74,13,77,89,2,77,76,21,100,93,82,64,34,94,31,88,91,77,32,47,38,18,81,70,0,20,41,37,37,17,77,43,99|
79,4,34,66,74,4,1,59,38,34,34,0,24,9,76,56,95,51,43,55,51,65,10,73,12,17,66,54,97,52,57,84,65,89,38,55,28,77,98,10,36,93,33,58,99,36,19,77,59,50|
35,83,85,87,3,3,63,16,31,17,2,38,27,28,59,29,63,75,52,60,2,3,14,79,28,75,30,39,77,75,65,59,79,2,47,4,29,96,84,37,98,16,56,63,34,75,32,69,80,24|
60,3,95,40,57,60,94,22,37,20,79,27,2,59,89,88,37,81,37,11,56,95,33,82,25,76,14,79,81,48,79,53,54,69,95,99,96,98,24,43,81,89,69,71,27,33,61,22,91,55|
46,15,83,28,75,34,82,86,61,2,79,3,74,63,56,33,65,87,64,66,22,84,42,100,47,45,23,46,83,68,44,74,77,88,7,47,18,64,87,96,39,74,60,70,57,6,74,65,98,85|
89,8,68,87,90,43,41,2,52,75,19,11,35,27,35,65,85,28,41,7,74,39,83,13,61,80,38,74,79,22,39,45,22,81,32,17,95,25,37,99,3,66,42,17,7,56,23,30,7,78|
11,74,10,13,72,70,34,95,35,64,42,71,9,95,96,22,81,36,78,19,78,4,33,91,46,3,6,33,5,39,34,54,32,59,24,4,24,80,98,41,32,39,25,63,70,45,98,85,56,24|
29,14,75,35,91,93,30,9,81,39,71,47,8,44,100,88,43,49,48,93,6,18,31,74,8,89,95,11,24,1,7,15,61,34,12,34,40,81,72,98,26,41,79,69,51,73,46,31,44,0|];