1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
#!/usr/local/bin/ruby
# This program is contributed by Shin Nishiyama
# modified by K.Sasada
NP = 5
ROW = 8 + NP
COL = 8
$p = []
$b = []
$no = 0
def piece(n, a, nb)
nb.each{|x|
a[n] = x
if n == NP-1
$p << [a.sort]
else
nbc=nb.dup
[-ROW, -1, 1, ROW].each{|d|
if x+d > 0 and not a.include?(x+d) and not nbc.include?(x+d)
nbc << x+d
end
}
nbc.delete x
piece(n+1,a[0..n],nbc)
end
}
end
def kikaku(a)
a.collect {|x| x - a[0]}
end
def ud(a)
kikaku(a.collect {|x| ((x+NP)%ROW)-ROW*((x+NP)/ROW) }.sort)
end
def rl(a)
kikaku(a.collect {|x| ROW*((x+NP)/ROW)+ROW-((x+NP)%ROW)}.sort)
end
def xy(a)
kikaku(a.collect {|x| ROW*((x+NP)%ROW) + (x+NP)/ROW }.sort)
end
def mkpieces
piece(0,[],[0])
$p.each do |a|
a0 = a[0]
a[1] = ud(a0)
a[2] = rl(a0)
a[3] = ud(rl(a0))
a[4] = xy(a0)
a[5] = ud(xy(a0))
a[6] = rl(xy(a0))
a[7] = ud(rl(xy(a0)))
a.sort!
a.uniq!
end
$p.uniq!.sort! {|x,y| x[0] <=> y[0] }
end
def mkboard
(0...ROW*COL).each{|i|
if i % ROW >= ROW-NP
$b[i] = -2
else
$b[i] = -1
end
$b[3*ROW+3]=$b[3*ROW+4]=$b[4*ROW+3]=$b[4*ROW+4]=-2
}
end
def pboard
return # skip print
print "No. #$no\n"
(0...COL).each{|i|
print "|"
(0...ROW-NP).each{|j|
x = $b[i*ROW+j]
if x < 0
print "..|"
else
printf "%2d|",x+1
end
}
print "\n"
}
print "\n"
end
$pnum=[]
def setpiece(a,pos)
if a.length == $p.length then
$no += 1
pboard
return
end
while $b[pos] != -1
pos += 1
end
($pnum - a).each do |i|
$p[i].each do |x|
f = 0
x.each{|s|
if $b[pos+s] != -1
f=1
break
end
}
if f == 0 then
x.each{|s|
$b[pos+s] = i
}
a << i
setpiece(a.dup, pos)
a.pop
x.each{|s|
$b[pos+s] = -1
}
end
end
end
end
mkpieces
mkboard
$p[4] = [$p[4][0]]
$pnum = (0...$p.length).to_a
setpiece([],0)
|
