st := array(0 .. 15, 0 .. 15,[(12, 3)=2,(2, 13)=2,(3, 7)=6,(5, 13)=3,(13, 8)=7
,(13, 3)=3,(0, 13)=5,(2, 4)=11,(2, 0)=15,(8, 5)=0,(7, 5)=13,(14, 10)=5,(8, 8)=
4,(14, 5)=14,(14, 0)=0,(0, 9)=3,(5, 0)=8,(8, 3)=15,(0, 15)=0,(9, 11)=2,(12, 2)
=7,(4, 15)=11,(11, 13)=13,(4, 10)=2,(11, 8)=8,(11, 3)=6,(14, 14)=6,(9, 10)=0,(
9, 5)=10,(4, 0)=5,(7, 1)=6,(2, 5)=8,(1, 14)=10,(10, 8)=14,(10, 3)=4,(1, 9)=4,(
15, 12)=1,(11, 1)=5,(3, 13)=4,(15, 7)=7,(15, 2)=0,(9, 0)=13,(8, 11)=7,(6, 5)=3
,(2, 10)=10,(7, 12)=7,(6, 13)=15,(7, 4)=5,(10, 1)=7,(0, 3)=13,(6, 1)=14,(4, 6)
=15,(9, 12)=4,(2, 7)=14,(12, 14)=1,(12, 9)=5,(2, 14)=7,(12, 4)=15,(3, 8)=15,(5
, 14)=4,(13, 9)=6,(13, 4)=8,(3, 0)=10,(2, 1)=9,(14, 11)=4,(14, 6)=1,(5, 6)=13,
(5, 1)=0,(8, 4)=2,(14, 1)=15,(0, 10)=15,(11, 14)=9,(4, 11)=9,(11, 9)=14,(11, 4
)=12,(9, 6)=11,(4, 1)=10,(10, 9)=2,(3, 5)=7,(10, 4)=10,(1, 10)=13,(11, 2)=2,(
15, 13)=6,(15, 8)=9,(3, 14)=11,(10, 13)=12,(3, 9)=0,(15, 3)=10,(9, 1)=1,(8, 12
)=11,(7, 13)=10,(7, 8)=2,(7, 2)=3,(6, 9)=7,(4, 7)=4,(6, 2)=6,(0, 4)=7,(9, 13)=
7,(6, 6)=10,(2, 8)=1,(12, 15)=4,(12, 10)=6,(2, 15)=5,(12, 5)=11,(13, 10)=1,(5,
15)=6,(5, 10)=7,(13, 5)=9,(6, 7)=9,(3, 1)=12,(13, 0)=11,(2, 2)=12,(13, 12)=14,
(14, 7)=2,(5, 7)=11,(5, 2)=5,(14, 2)=10,(6, 14)=13,(0, 11)=14,(13, 13)=0,(0, 6
)=2,(8, 0)=9,(0, 0)=1,(11, 15)=3,(11, 10)=11,(4, 12)=12,(11, 5)=4,(1, 2)=1,(9,
7)=5,(4, 2)=14,(10, 10)=3,(4, 5)=6,(10, 5)=1,(1, 11)=5,(15, 14)=2,(1, 6)=7,(3,
15)=2,(15, 9)=15,(10, 14)=15,(15, 4)=4,(2, 11)=6,(3, 10)=14,(14, 15)=7,(9, 2)=
15,(8, 13)=14,(7, 14)=0,(7, 9)=11,(6, 10)=4,(7, 6)=14,(4, 8)=0,(1, 0)=3,(6, 3)
=11,(9, 14)=14,(0, 5)=12,(12, 11)=13,(12, 6)=12,(6, 0)=2,(13, 11)=10,(5, 11)=1
,(13, 6)=5,(6, 8)=5,(3, 2)=8,(2, 3)=0,(13, 1)=2,(1, 3)=9,(5, 8)=12,(14, 8)=13,
(6, 15)=1,(8, 6)=6,(0, 12)=6,(14, 3)=8,(5, 3)=14,(8, 1)=3,(0, 7)=10,(13, 14)=
12,(12, 0)=14,(4, 13)=1,(11, 11)=15,(11, 6)=0,(9, 8)=3,(4, 3)=7,(9, 3)=12,(10,
11)=0,(1, 12)=2,(10, 6)=8,(1, 7)=0,(15, 15)=14,(15, 10)=8,(10, 15)=9,(3, 11)=3
,(15, 5)=5,(15, 0)=12,(8, 14)=5,(8, 9)=1,(14, 12)=9,(7, 15)=15,(3, 3)=5,(7, 10
)=9,(6, 11)=12,(7, 7)=12,(6, 4)=0,(4, 9)=8,(1, 1)=11,(9, 15)=8,(12, 12)=0,(12,
7)=3,(2, 12)=3,(3, 6)=9,(13, 7)=15,(5, 12)=15,(13, 2)=4,(1, 4)=14,(5, 9)=10,(
14, 9)=12,(14, 4)=3,(8, 7)=8,(5, 4)=9,(0, 8)=11,(8, 2)=13,(13, 15)=13,(0, 1)=4
,(12, 1)=8,(4, 14)=3,(11, 12)=10,(11, 7)=1,(14, 13)=11,(9, 9)=9,(9, 4)=6,(4, 4
)=13,(3, 4)=1,(7, 0)=4,(10, 12)=5,(1, 13)=8,(0, 14)=8,(10, 7)=13,(1, 5)=15,(1,
8)=6,(10, 2)=11,(11, 0)=7,(15, 11)=11,(15, 6)=3,(3, 12)=13,(15, 1)=13,(8, 15)=
10,(8, 10)=12,(2, 9)=13,(5, 5)=2,(7, 11)=8,(6, 12)=8,(7, 3)=1,(10, 0)=6,(0, 2)
=9,(2, 6)=4,(1, 15)=12,(12, 13)=9,(12, 8)=10]);
