結果
問題 |
No.17 2つの地点に泊まりたい
|
ユーザー |
![]() |
提出日時 | 2023-10-10 21:33:19 |
言語 | D (dmd 2.109.1) |
結果 |
AC
|
実行時間 | 352 ms / 5,000 ms |
コード長 | 1,797 bytes |
コンパイル時間 | 3,798 ms |
コンパイル使用メモリ | 187,764 KB |
実行使用メモリ | 9,088 KB |
最終ジャッジ日時 | 2025-01-01 18:36:00 |
合計ジャッジ時間 | 5,031 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 27 |
ソースコード
void main() { enum INF = 10 ^^ 9; alias Entry = Tuple!(int, "c", int, "u"); const N = readInt; auto S = new int[N]; foreach (i; 0 .. N) S[i] = readInt; const M = readInt; auto A = new int[M]; auto B = new int[M]; auto C = new int[M]; auto G = new int[][](N, 0); foreach (i; 0 .. M) { A[i] = readInt; B[i] = readInt; C[i] = readInt; G[A[i]] ~= i; G[B[i]] ~= i; } int ans = INF; foreach (i; 1 .. N - 1) foreach (j; 1 .. N - 1) { if (i == j) continue; int now = S[i] + S[j]; bool ok = true; foreach (V; [[0, i], [i, j], [j, N - 1]]) { auto dist = new int[N]; auto Q = new BinaryHeap!(Array!Entry, "a > b"); dist[] = INF; dist[V[0]] = 0; Q.insert(Entry(0, V[0])); while (!Q.empty) { int c = Q.front.c; int u = Q.front.u; Q.removeFront; if (dist[u] < c) continue; foreach (k; G[u]) { int v = u ^ A[k] ^ B[k]; if (chmin(dist[v], c + C[k])) { Q.insert(Entry(dist[v], v)); } } } if (dist[V[1]] == INF) { ok = false; break; } now += dist[V[1]]; } if (ok) chmin(ans, now); } ans.writeln; } import std,core.bitop; string[]_R; string readString(){while(_R.empty){_R=readln.chomp.split;}auto ret=_R.front;_R.popFront;return ret;} int readInt(){return readString.to!int;} long readLong(){return readString.to!long;} ulong readULong(){return readString.to!ulong;} real readReal(){return readString.to!real;} bool chmin(T)(ref T A,T B){if(A>B){A=B;return true;}else{return false;}} bool chmax(T)(ref T A,T B){if(A<B){A=B;return true;}else{return false;}} int lowerBound(T)(T[]A,T x){int L=-1,R=cast(int)A.length;while(R-L>1){int mid=(L+R)/2;(A[mid]<x?L:R)=mid;}return R;} int upperBound(T)(T[]A,T x){int L=-1,R=cast(int)A.length;while(R-L>1){int mid=(L+R)/2;(A[mid]<=x?L:R)=mid;}return R;}