結果
問題 | No.1577 織姫と彦星2 |
ユーザー | yuruhiya |
提出日時 | 2021-06-29 20:28:43 |
言語 | Crystal (1.11.2) |
結果 |
AC
|
実行時間 | 75 ms / 2,000 ms |
コード長 | 5,767 bytes |
コンパイル時間 | 15,840 ms |
コンパイル使用メモリ | 295,128 KB |
実行使用メモリ | 9,344 KB |
最終ジャッジ日時 | 2024-06-25 22:54:23 |
合計ジャッジ時間 | 18,617 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 15 ms
6,940 KB |
testcase_06 | AC | 5 ms
6,940 KB |
testcase_07 | AC | 49 ms
8,320 KB |
testcase_08 | AC | 19 ms
6,940 KB |
testcase_09 | AC | 75 ms
9,344 KB |
testcase_10 | AC | 17 ms
6,940 KB |
testcase_11 | AC | 5 ms
6,944 KB |
testcase_12 | AC | 32 ms
6,944 KB |
testcase_13 | AC | 17 ms
6,940 KB |
testcase_14 | AC | 45 ms
6,940 KB |
testcase_15 | AC | 15 ms
6,944 KB |
testcase_16 | AC | 47 ms
8,320 KB |
testcase_17 | AC | 26 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 48 ms
6,940 KB |
testcase_20 | AC | 38 ms
6,940 KB |
testcase_21 | AC | 46 ms
8,192 KB |
testcase_22 | AC | 44 ms
7,808 KB |
testcase_23 | AC | 20 ms
6,940 KB |
testcase_24 | AC | 59 ms
8,320 KB |
testcase_25 | AC | 13 ms
6,940 KB |
testcase_26 | AC | 22 ms
6,940 KB |
testcase_27 | AC | 40 ms
6,944 KB |
testcase_28 | AC | 39 ms
6,944 KB |
testcase_29 | AC | 22 ms
6,944 KB |
testcase_30 | AC | 28 ms
6,940 KB |
testcase_31 | AC | 47 ms
7,680 KB |
testcase_32 | AC | 3 ms
6,944 KB |
testcase_33 | AC | 3 ms
6,940 KB |
testcase_34 | AC | 22 ms
6,940 KB |
testcase_35 | AC | 41 ms
7,680 KB |
testcase_36 | AC | 43 ms
7,808 KB |
testcase_37 | AC | 64 ms
8,704 KB |
testcase_38 | AC | 64 ms
8,832 KB |
testcase_39 | AC | 19 ms
6,940 KB |
testcase_40 | AC | 20 ms
6,940 KB |
testcase_41 | AC | 51 ms
8,320 KB |
testcase_42 | AC | 36 ms
6,940 KB |
testcase_43 | AC | 36 ms
6,944 KB |
testcase_44 | AC | 3 ms
6,944 KB |
testcase_45 | AC | 12 ms
6,940 KB |
testcase_46 | AC | 12 ms
6,944 KB |
testcase_47 | AC | 43 ms
7,552 KB |
testcase_48 | AC | 18 ms
6,944 KB |
testcase_49 | AC | 25 ms
6,940 KB |
testcase_50 | AC | 18 ms
6,940 KB |
testcase_51 | AC | 6 ms
6,944 KB |
testcase_52 | AC | 62 ms
8,064 KB |
testcase_53 | AC | 60 ms
8,192 KB |
testcase_54 | AC | 27 ms
6,940 KB |
testcase_55 | AC | 57 ms
7,808 KB |
testcase_56 | AC | 17 ms
6,940 KB |
testcase_57 | AC | 9 ms
6,940 KB |
ソースコード
# require "/graph/bfs" # require "./graph" struct Edge(T) include Comparable(Edge(T)) property to : Int32 property cost : T def initialize(@to : Int32, @cost : T) end def <=>(other : Edge(T)) {cost, to} <=> {other.cost, other.to} end def to_s(io) : Nil io << '(' << to << ", " << cost << ')' end def inspect(io) : Nil io << "->#{to}(#{cost})" end end struct Edge2(T) include Comparable(Edge2(T)) property from : Int32 property to : Int32 property cost : T def initialize(@from : Int32, @to : Int32, @cost : T) end def <=>(other : Edge2(T)) {cost, from, to} <=> {other.cost, other.from, other.to} end def reverse Edge2(T).new(to, from, cost) end def to_s(io) : Nil io << '(' << from << ", " << to << ", " << cost << ')' end def inspect(io) : Nil io << "#{from}->#{to}(#{cost})" end end struct UnweightedEdge2 property from : Int32 property to : Int32 def initialize(@from, @to) end def reverse UnweightedEdge2.new(to, from) end def to_s(io) : Nil io << '(' << from << ", " << to << ')' end def inspect(io) : Nil io << "#{from}->#{to}" end end abstract class Graph(T) getter graph : Array(Array(Edge(T))) def initialize(size : Int) raise ArgumentError.new("Negative graph size: #{size}") unless size >= 0 @graph = Array.new(size) { Array(Edge(T)).new } end def add_edge(i : Int32, j : Int32, cost : T) add_edge(Edge2.new(i, j, cost)) end def add_edges(edges : Array(Edge2(T))) edges.each { |edge| add_edge(edge) } self end delegate size, to: @graph delegate :[], to: @graph def each_edge : Nil (0...size).each do |v| graph[v].each do |edge| yield Edge2(T).new(v, edge.to, edge.cost) end end end def edges result = [] of Edge2(T) each_edge do |edge| result << edge end result end end class DirectedGraph(T) < Graph(T) def initialize(size : Int) super end def initialize(size : Int, edges : Array(Edge2(T))) super(size) add_edges(edges) end def add_edge(edge : Edge2(T)) raise IndexError.new unless 0 <= edge.from < size raise IndexError.new unless 0 <= edge.to < size @graph[edge.from] << Edge.new(edge.to, edge.cost) self end end class UndirectedGraph(T) < Graph(T) def initialize(size : Int) super end def initialize(size : Int, edges : Array(Edge2(T))) super(size) add_edges(edges) end def add_edge(edge : Edge2(T)) raise IndexError.new unless 0 <= edge.from < size raise IndexError.new unless 0 <= edge.to < size @graph[edge.from] << Edge.new(edge.to, edge.cost) @graph[edge.to] << Edge.new(edge.from, edge.cost) self end end abstract class UnweightedGraph getter graph : Array(Array(Int32)) def initialize(size : Int) raise ArgumentError.new("Negative graph size: #{size}") unless size >= 0 @graph = Array.new(size) { Array(Int32).new } end def add_edge(i : Int32, j : Int32) add_edge(UnweightedEdge2.new(i, j)) end def add_edges(edges : Array(UnweightedEdge2)) edges.each { |edge| add_edge(edge) } self end delegate size, to: @graph delegate :[], to: @graph def each_edge : Nil (0...size).each do |v| graph[v].each do |u| yield UnweightedEdge2.new(v, u) end end end def edges result = [] of UnweightedEdge2 each_edge do |edge| result << edge end result end end class UnweightedDirectedGraph < UnweightedGraph def initialize(size : Int) super end def initialize(size : Int, edges : Array(UnweightedEdge2)) super(size) add_edges(edges) end def add_edge(edge : UnweightedEdge2) raise IndexError.new unless 0 <= edge.from < size raise IndexError.new unless 0 <= edge.to < size @graph[edge.from] << edge.to self end end class UnweightedUndirectedGraph < UnweightedGraph def initialize(size : Int) super end def initialize(size : Int, edges : Array(UnweightedEdge2)) super(size) add_edges(edges) end def add_edge(edge : UnweightedEdge2) raise IndexError.new unless 0 <= edge.from < size raise IndexError.new unless 0 <= edge.to < size @graph[edge.from] << edge.to @graph[edge.to] << edge.from self end def each_child(vertex : Int, parent) graph[vertex].each do |u| yield u if u != parent end end end class UnweightedGraph def bfs(start : Int32, unreachable : U = nil) forall U raise ArgumentError.new unless 0 <= start < size queue = Deque{start} dist = Array(Int32?).new(size, nil) dist[start] = 0 while v = queue.pop? graph[v].each do |edge| if dist[edge].nil? dist[edge] = dist[v].not_nil! + 1 queue.unshift edge end end end dist.map { |i| i || unreachable } end def bfs!(start : Int32) bfs(start).map(&.not_nil!) end def bfs_st(start : Int32, goal : Int32, unreachable : U = nil) forall U raise ArgumentError.new unless 0 <= start < size queue = Deque{start} dist = Array(Int32?).new(size, nil) dist[start] = 0 while v = queue.pop? d = dist[v].not_nil! return d if v == goal graph[v].each do |edge| if dist[edge].nil? dist[edge] = d + 1 queue.unshift edge end end end unreachable end end n = read_line.to_i s, t = read_line.split.map(&.to_i) a = read_line.split.map(&.to_i) stones = a + [s, t] hash = stones.zip(0..).to_h g = UnweightedUndirectedGraph.new(stones.size) stones.each_with_index do |x, i| (0..30).each do |bit| if j = hash[x ^ (1 << bit)]? g.add_edge(i, j) end end end puts g.bfs_st(hash[s], hash[t]).try(&.pred) || -1