結果
問題 | No.160 最短経路のうち辞書順最小 |
ユーザー | chaemon |
提出日時 | 2019-08-18 19:36:40 |
言語 | Nim (2.0.2) |
結果 |
AC
|
実行時間 | 13 ms / 5,000 ms |
コード長 | 2,714 bytes |
コンパイル時間 | 3,343 ms |
コンパイル使用メモリ | 72,192 KB |
実行使用メモリ | 7,552 KB |
最終ジャッジ日時 | 2024-07-02 15:53:16 |
合計ジャッジ時間 | 4,377 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 5 ms
5,376 KB |
testcase_05 | AC | 8 ms
5,760 KB |
testcase_06 | AC | 12 ms
5,888 KB |
testcase_07 | AC | 3 ms
5,376 KB |
testcase_08 | AC | 3 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 4 ms
5,376 KB |
testcase_12 | AC | 3 ms
5,376 KB |
testcase_13 | AC | 3 ms
5,376 KB |
testcase_14 | AC | 3 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 3 ms
5,376 KB |
testcase_17 | AC | 3 ms
5,376 KB |
testcase_18 | AC | 3 ms
5,376 KB |
testcase_19 | AC | 3 ms
5,376 KB |
testcase_20 | AC | 3 ms
5,376 KB |
testcase_21 | AC | 3 ms
5,376 KB |
testcase_22 | AC | 3 ms
5,376 KB |
testcase_23 | AC | 4 ms
5,376 KB |
testcase_24 | AC | 4 ms
5,376 KB |
testcase_25 | AC | 3 ms
5,376 KB |
testcase_26 | AC | 3 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 13 ms
7,552 KB |
testcase_29 | AC | 2 ms
5,376 KB |
コンパイルメッセージ
/home/judge/data/code/Main.nim(2, 45) Warning: imported and not used: 'math' [UnusedImport]
ソースコード
#{{{ header import algorithm, sequtils, tables, macros, math, sets, strutils when defined(MYDEBUG): import header proc scanf(formatstr: cstring){.header: "<stdio.h>", varargs.} proc getchar(): char {.header: "<stdio.h>", varargs.} proc nextInt(): int = scanf("%lld",addr result) proc nextFloat(): float = scanf("%lf",addr result) proc nextString(): string = var get = false result = "" while true: var c = getchar() if int(c) > int(' '): get = true result.add(c) else: if get: break get = false template `max=`*(x,y:typed):void = x = max(x,y) template `min=`*(x,y:typed):void = x = min(x,y) template infty(T): untyped = ((T(1) shl T(sizeof(T)*8-2)) - 1) #}}} #{{{ Graph type Edge[T] = object src,dst:int weight:T rev:int proc `<`[T](l,r:Edge[T]):bool = l.weight < r.weight proc newEdge[T](src,dst:int,weight:T,rev:int = -1):Edge[T] = var e:Edge[T] e.src = src e.dst = dst e.weight = weight e.rev = rev return e type Graph[T] = seq[seq[Edge[T]]] proc newGraph[T](n:int):Graph[T]= var g:Graph[T] g = newSeqWith(n,newSeq[Edge[T]]()) return g proc addBiEdge[T](g:var Graph[T],src,dst:int,weight:T=1):void = g[src].add(newEdge(src,dst,weight,g[dst].len)) g[dst].add(newEdge(dst,src,weight,g[src].len-1)) proc addEdge[T](g:var Graph[T],src,dst:int,weight:T=1):void = g[src].add(newEdge(src,dst,weight,-1)) #}}} import heapqueue proc cmp2(l,r:Edge[int]):int = if l.dst < r.dst : -1 else: 1 proc shortestPath[T](g:Graph[T], s:int): (seq[T],seq[int]) = var n = g.len dist = newSeqWith(n,int.infty) prev = newSeqWith(n,-1) Q = initHeapQueue[Edge[T]]() dist[s] = 0 Q.push(newEdge[int](-2,s,0)) while Q.len > 0: var e = Q.pop() if prev[e.dst] != -1: continue prev[e.dst] = e.src; for f in g[e.dst]: var w = e.weight + f.weight; if dist[f.dst] > w: dist[f.dst] = w; Q.push(newEdge(f.src, f.dst, w)); discard return (dist,prev) proc path(t: int, prev: seq[int]): seq[int] = var u = t while u >= 0: result.add(u) u = prev[u] result.reverse() proc main():void = var N = nextInt() M = nextInt() S = nextInt() G = nextInt() a = newSeq[int](M) b = newSeq[int](M) c = newSeq[int](M) g = newGraph[int](N) for i in 0..M-1: a[i] = nextInt();b[i] = nextInt();c[i] = nextInt() g.addBiEdge(a[i],b[i],c[i]) for u in 0..N-1: g[u].sort(cmp2) var (dist,_) = shortest_path(g,G) var cur = S ans = newSeq[int]() while cur != G: ans.add(cur) for e in g[cur]: if dist[cur] == dist[e.dst] + e.weight: cur = e.dst break ans.add(cur) echo ans.join(" ") discard main()