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