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