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#!/usr/bin/env ruby
input = $stdin.readlines.map(&:strip).map{|x|x.split(",")}
def map_wire(wire_segments)
wire = []
x = 0
y = 0
wire_segments.each do |seg|
dir = seg[0]
len = seg[1..-1].to_i
len.times do
case dir
when "R"
x += 1
when "L"
x -= 1
when "U"
y += 1
when "D"
y -= 1
end
wire << [x, y]
end
end
wire
end
wire1 = map_wire(input[0])
wire2 = map_wire(input[1])
intersections = (wire1 & wire2) - [0,0]
steps = intersections.map do |i|
wire1.index(i) + wire2.index(i) + 2
end
puts steps.min
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