You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
619 B
29 lines
619 B
7 years ago
|
start_a, start_b = ARGF.read.strip.scan(/\d+/).map(&:to_i)
|
||
|
|
|
||
|
|
class Generator
|
||
|
|
def initialize(start, factor)
|
||
|
|
@value = start
|
||
|
|
@factor = factor
|
||
|
|
end
|
||
|
|
|
||
|
|
def each
|
||
|
|
return enum_for(__method__) unless block_given?
|
||
|
|
|
||
|
|
loop do
|
||
|
|
@value *= @factor
|
||
|
|
@value %= 2147483647
|
||
|
|
yield @value
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
# start_a, start_b = 65, 8921
|
||
|
|
a = Generator.new(start_a, 16807).each.lazy
|
||
|
|
b = Generator.new(start_b, 48271).each.lazy
|
||
|
|
|
||
|
|
p a.zip(b).take(40_000_000).with_index.count {|(a,b),i|
|
||
|
|
p i if i % 1_000_000 == 0
|
||
|
|
# a.to_s(2)[-16,16] == b.to_s(2)[-16,16]
|
||
|
|
a & 0b1111111111111111 == b & 0b1111111111111111
|
||
|
|
}
|