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É×Éؤò(1,2),(3,4),(5,6),(7,8)¤È¤·¤Æ

PRINT TIME$
FOR a=1 TO 1
FOR b=1 TO 8
if (a+b=3 and a*b=2) or (a+b=7 and a*b=12) or (a+b=11 and a*b=30) or (a+b=15 and a*b=56) then goto 70
FOR c=1 TO 8
if (b+c=3 and b*c=2) or (b+c=7 and b*c=12) or (b+c=11 and b*c=30) or (b+c=15 and b*c=56) then goto 60
FOR d=1 TO 8
if (c+d=3 and c*d=2) or (c+d=7 and c*d=12) or (c+d=11 and c*d=30) or (c+d=15 and c*d=56) then goto 50
FOR e=1 TO 8
if (d+e=3 and d*e=2) or (d+e=7 and d*e=12) or (d+e=11 and d*e=30) or (d+e=15 and d*e=56) then goto 40
FOR f=1 TO 8
if (e+f=3 and e*f=2) or (e+f=7 and e*f=12) or (e+f=11 and e*f=30) or (e+f=15 and e*f=56) then goto 30
FOR g=1 TO 8
if (f+g=3 and f*g=2) or (f+g=7 and f*g=12) or (f+g=11 and f*g=30) or (f+g=15 and f*g=56) then goto 20
FOR h=1 TO 8
if (g+h=3 and g*h=2) or (g+h=7 and g*h=12) or (g+h=11 and g*h=30) or (g+h=15 and g*h=56) or (h+a=3 and h*a=2) or (h+a=7 and h*a=12) or (h+a=11 and h*a=30) or (h+a=15 and h*a=56) then goto 10
IF a+b+c+d+e+f+g+h=36 AND a*b*c*d*e*f*g*h=40320 THEN LET s=s+1
10 next h
20 next g
30 next f
40 next e
50 next d
60 next c
70 next b
80 next a
PRINT s
PRINT TIME$
END

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n¤¬¾®¤µ¤¤¾ì¹ç¤«¤é¿ô¤¨¾å¤²¤Æ¤¤¤¯¡£
-----
A1,0=0
A1,1=1
------
A2,0¡áA1,1*2*1¡á2
A2,1¡á0
A2,2¡á(2-1)!*2*2=4
------
A3,0=A2,0*4*3+A2,2*2*1=32
A3,1=A2,0*4*2+A2,2*8=48
A3,2=A2,2*6=24
A3,3=(3-1)!*2*2*2=16
-----
A4,0=A3,0*6*5+A3,1*2*5+A3,2*2*1=1488
//

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¡¡¡¡ 7·î31Æü¡Ê¶â¡Ë 13:16:40¡¡¡¡ ¡¡¡¡49373
SECOND
! 1 8 3 7 2 6 4 5 1¡¡No_ 1277
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! Ãæ¼5 ¡¡¡¡¡¡¡¡¹â¶¶7¡¡¡¡¡¡¡¡¡¡¡¡Ï¢Â³¥×¥ê¥ó¥È¡£°Ê²¼¤ò½½¿ÊBASC ¤Ç£±¡Á£²Éá£
!¡¡º´Æ£4 Ãæ¼6 µÈÀî2

DIM a(10),c$(8)
MAT READ a,c$
DATA 1,2,3,4,5,6,7,8,1,0 !12 34 56 78¡¡¤¬£´ÁȤÎÉ×ÉØ
DATA µÈÀî1,µÈÀî2,º´Æ£3,º´Æ£4,Ãæ¼5,Ãæ¼6,¹â¶¶7,¹â¶¶8
CALL perm20(2) !a(1)=a(9)=1 ¸ÇÄê¡£a(2)¡Áa(8) ¤Î¼Â¼Á P(7,7) ¤Î½çÎó

SUB perm20(k)
local i
IF k< 8 THEN
FOR i=k TO 8
swap a(k),a(i)
CALL perm20(k+1)
swap a(k),a(i)
NEXT i
ELSE !a(1)=1 ¸ÇÄê¡£--- ¸Ä¡¹¤Î½çÎó P(2~8, 2~8) ---
IF a(2)=2 OR a(8)=2 THEN EXIT SUB
FOR j=2 TO 8
IF a(j)=3 AND (a(j+1)=4 OR a(j-1)=4) THEN EXIT SUB
IF a(j)=5 AND (a(j+1)=6 OR a(j-1)=6) THEN EXIT SUB
IF a(j)=7 AND (a(j+1)=8 OR a(j-1)=8) THEN EXIT SUB
NEXT j
LET a(10)=a(10)+1
MAT PRINT USING "! # # # # # # # # #¡¡No_#####" :a
CALL pattern
END IF
END SUB

SUB pattern
PRINT USING "!¡¡##### ##### #####" :c$(a(1)),c$(a(2)),c$(a(3))
PRINT USING "! ##### ¡¡¡¡¡¡¡¡#####":c$(a(8)), c$(a(4))
PRINT USING "!¡¡##### ##### #####" :c$(a(7)),c$(a(6)),c$(a(5))
PRINT
END SUB
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2¥Ú¥¢...f(2)=2
3¥Ú¥¢...f(3)=f(2)*4C2*2+3C1*(3!-f(2))*2=2*6*2+3*4*2=48¡¦¡¦¡¦¤³¤³¤¬´Ö°ã¤Ã¤Æ¤ë¤è¤¦¤Ê¤Î¤Ç±³¤Í ^^;;
4¥Ú¥¢...f(4)=f(3)*6C2*2+4C1*3!*2=48*15*2+4*6*2=1488

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Python¤ÇÁíÅö¤¿¤ê¤·¤Þ¤·¤¿

import random

fin =[]
for i in range(5000000):
l = [0,1,2,3,4,5,6,7]
a = 0
l.remove (a)
b = random.choice(l)
if b == 7or b==1:
continue
l.remove(b)
c = random.choice(l)
l.remove (c)
d = random.choice (l)
l.remove (d)
e= random.choice(l)
l.remove (e)
f= random.choice (l)
l.remove (f)
g= random.choice(l)
l.remove (g)
h= random.choice (l)
l.remove (h)
if abs(c-d)!= 1 and abs (e-f) !=1 and abs (g-h) != 1:
#print (a,b,c,d,e,f,g,h)
new_l = a*100000000+b*10000000+c*1000000+d*100000+10000+e*1000+f*100+g*10+h
#print (new_l)
fin.append(new_l)
num = set(fin)
print (len(num))
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kyorofumi
7!-6!x2x4+5!x2^2x4C2-4!x2^3x4C3+3!x2^4 = 1488
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ruby -e 'p (0..7).to_a.permutation.map{|a|(0..7).map{|i|(a[i-1]-a[i])%4}.count(0)==0}.count(true)/8'

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p [1,1,2,2,3,3,4,4].permutation.to_a.delete_if{|x|s=1;(0..7).each{|i|s*=(x[i]-x[(i+1)%8])};s==0}.size/8
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