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