Submission #1514474

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Source Code Expand

N,M=gets.split.map(&:to_i)
X,Y=gets.split.map(&:to_i)
a=gets.split.map(&:to_i)
b=gets.split.map(&:to_i)

time = 0
count = 0

aidx = 0
bidx = 0

while true do
  while time > a[aidx] do
    aidx += 1
    if aidx >= N then
      puts count
      exit
    end
  end
  time = a[aidx] + X
  
  while time > b[bidx] do
    bidx += 1
    if bidx >= M then
      puts count
      exit
    end
  end
  time = b[bidx] + Y
  count += 1
end  

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