Submission #1767969

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Source Code Expand

z=*$<;z.map! &:to_i

n = z.shift

if z.include?(n)
    puts "NO"
    exit
end

dp = [0]*333

dp[n] = 100

n.downto(1) do |i|
    dp[i-1]=[dp[i]-1,dp[i-1]].max unless z.include?(i-1)
    dp[i-2]=[dp[i]-1,dp[i-2]].max unless z.include?(i-2)
    dp[i-3]=[dp[i]-1,dp[i-3]].max unless z.include?(i-3)
end

puts dp[0]==0 ?:NO: :YES

Submission Info

Compile Error

./Main.rb:1: warning: `&' interpreted as argument prefix

Judge Result