結果
問題 | No.1 道のショートカット |
ユーザー |
|
提出日時 | 2016-03-22 02:35:28 |
言語 | Ruby (3.4.1) |
結果 |
AC
|
実行時間 | 97 ms / 5,000 ms |
コード長 | 1,244 bytes |
コンパイル時間 | 44 ms |
コンパイル使用メモリ | 7,424 KB |
実行使用メモリ | 12,416 KB |
最終ジャッジ日時 | 2024-07-20 16:21:44 |
合計ジャッジ時間 | 5,296 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 40 |
コンパイルメッセージ
Main.rb:57: warning: ambiguous first argument; put parentheses or a space even after `-' operator Main.rb:31: warning: assigned but unused variable - num_ways Main.rb:36: warning: assigned but unused variable - pos_head Syntax OK
ソースコード
#!ruby def load_int(io) io.gets.to_i end def load_int_array(io) io.gets.chomp.split.map(&:to_i) end def load_problem(io) num_cities = load_int(io) cost_limit = load_int(io) num_ways = load_int(io) s = load_int_array(io) t = load_int_array(io) y = load_int_array(io) m = load_int_array(io) ways = [] num_ways.times do |i| ways << { start: s[i], terminal: t[i], cost: y[i], time: m[i] } end ways_from = ways.group_by{|way| way[:start] } [ num_cities, cost_limit, num_ways, ways_from ] end def main num_cities, cost_limit, num_ways, ways_from = load_problem(STDIN) candidates = [ { pos: 1, cost: 0, time: 0 } ] result = nil pos_head = 1 until candidates.empty? candidates.sort_by!{|c| c[:time] } current = candidates.shift if num_cities == current[:pos] result = current break end next unless ways_from[current[:pos]] ways_from[current[:pos]].each do |next_way| cost = current[:cost] + next_way[:cost] time = current[:time] + next_way[:time] next if cost_limit < cost candidates.unshift({ pos: next_way[:terminal], cost: cost, time: time }) end end if result.nil? puts -1 exit 0 end puts result[:time] end main