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class Resistor
def reductant_resistors(a)
# if current flows from A towards B to C to D to F to G
b = []
b << a[0]
b << a[2]
b << a[4]
b << a[7]
b << a[9]
ac = b.flatten
ac1 = ac.select{|x| x.class == Fixnum}
d = 0
for i in 0..(ac1.length-1)
d += ac1[i]
end
# if current flows from A towards B to C to F to G
b1 = []
b1 << a[0]
b1 << a[2]
b1 << a[6]
b1 << a[9]
bc = b1.flatten
bc1 = bc.select{|x| x.class == Fixnum}
d1 = 0
for i in 0..(bc1.length-1)
d1 += bc1[i]
end
# if current flows from A towards B to C to E to G
b2 = []
b2 << a[0]
b2 << a[2]
b2 << a[5]
b2 << a[8]
cc = b2.flatten
cc1 = cc.select{|x| x.class == Fixnum}
d2 = 0
for i in 0..(cc1.length-1)
d2 += cc1[i]
end
# if current flows from A towards B to E to G
b3= []
b3 << a[0]
b3 << a[3]
b3 << a[8]
dc = b3.flatten
dc1 = dc.select{|x| x.class == Fixnum}
d3 = 0
for i in 0..(dc1.length-1)
d3 += dc1[i]
end
# if current flows from A towards D to C to E to G
b4 = []
b4 << a[1]
b4 << a[4]
b4 << a[5]
b4 << a[8]
ec = b4.flatten
ec1 = ec.select{|x| x.class == Fixnum}
d4 = 0
for i in 0..(ec1.length-1)
d4 += ec1[i]
end
# if current flows from A towards D to C to B to E to G
b5 = []
b5 << a[1]
b5 << a[4]
b5 << a[2]
b5 << a[3]
b5 << a[8]
fc = b5.flatten
fc1 = fc.select{|x| x.class == Fixnum}
d5 = 0
for i in 0..(fc1.length-1)
d5 += fc1[i]
end
# if current flows from A towards D to C to F to G
b6 = []
b6 << a[1]
b6 << a[4]
b6 << a[6]
b6 << a[9]
gc = b6.flatten
gc1 = gc.select{|x| x.class == Fixnum}
d6 = 0
for i in 0..(gc1.length-1)
d6 += gc1[i]
end
# if current flows from A towards D to F to G
b7 = []
b7 << a[0]
b7 << a[7]
b7 << a[9]
hc = b7.flatten
hc1 = hc.select{|x| x.class == Fixnum}
d7 = 0
for i in 0..(hc1.length-1)
d7 += hc1[i]
end
c = []
c << d
c << d1
c << d2
c << d3
c << d4
c << d5
c << d6
c << d7
for i in 0..(c.length-1)
if c.min == c[i]
sol = eval("b"+"#{i}").length
for n in 0..(sol-1)
a.delete_if{|o| o == eval("b"+"#{i}")[n]}
end
end
end
puts a
end
r = Resistor.new
a = [
["A","B",50],
["A","D",150],
["B","C",250],
["B","E",250],
["C","D",50],
["C","E",350],
["C","F",100],
["D","F",400],
["E","G",200],
["F","G",100]
]
r.reductant_resistors(a)
end
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