Submission #2786319

---

Source Code Expand

N = gets.to_i
@s = s = gets.chomp

c = [
  [true, true],
  [true, false],
  [false, true],
  [false, false],
]

def check_at(n, ans)
  case ans[n]
  when true
    (@s[n] == "o" && ans[n-1] == ans[n+1]) || (@s[n] == "x" && ans[n-1] != ans[n+1])
  when false
    (@s[n] == "o" && ans[n-1] != ans[n+1]) || (@s[n] == "x" && ans[n-1] == ans[n+1])
  end
end

c.each do |ans|
  (N-2).times do |i|
    case
    when ans[i+1] && s[i+1] == "o"
      ans << ans[i]
    when ans[i+1] && s[i+1] == "x"
      ans << !ans[i]
    when !ans[i+1] && s[i+1] == "o"
      ans << !ans[i]
    else
      ans << ans[i]
    end
  end

  if check_at(0, ans) && check_at(-1, ans)
    puts ans.map { |i| i ? "S" : "W" }.join
    exit
  end
end
p -1

Submission Info

Compile Error

./Main.rb:39: warning: ambiguous first argument; put parentheses or a space even after `-' operator

Judge Result