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 ```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 ``` ``````benchmark: app_pentomino: | # 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) loop_count: 1 ``````