blob: dccb2103546e0a8798571b7e7137e212b9fea7df (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
def compare(left, right)
if left.is_a?(Numeric) && right.is_a?(Numeric)
left <=> right
elsif left.is_a?(Array) && right.is_a?(Array)
i = 0
t = nil
loop do
if left[i].nil? && right[i].nil?
t = 0
break
elsif left[i].nil?
t = -1
break
elsif right[i].nil?
t = 1
break
else
t = compare(left[i], right[i])
if t == 0
i += 1
else
break
end
end
end
return t
elsif left.is_a?(Array) && right.is_a?(Numeric)
return compare(left, [right])
elsif left.is_a?(Numeric) && right.is_a?(Array)
return compare([left], right)
end
end
packets = $stdin.readlines.map(&:strip).reject(&:empty?).map{ |l| eval(l) }.each_slice(2).to_a
sum = 0
i = 1
packets.each do |left, right|
sum += i if compare(left, right) < 0
i += 1
end
puts sum
|
