結果
| 問題 | No.1812 Uribo Road |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-01-14 21:40:26 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 173 ms / 5,000 ms |
| コード長 | 3,325 bytes |
| 記録 | |
| コンパイル時間 | 1,283 ms |
| コンパイル使用メモリ | 139,836 KB |
| 実行使用メモリ | 7,348 KB |
| 最終ジャッジ日時 | 2024-06-22 14:03:05 |
| 合計ジャッジ時間 | 3,615 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 30 |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
enum INF = 10L^^18;
void main() {
try {
for (; ; ) {
const N = readInt;
const M = readInt;
const K = readInt;
auto R = new int[K];
foreach (k; 0 .. K) {
R[k] = readInt - 1;
}
auto A = new int[M];
auto B = new int[M];
auto C = new long[M];
foreach (i; 0 .. M) {
A[i] = readInt - 1;
B[i] = readInt - 1;
C[i] = readLong;
}
auto G = new int[][N];
foreach (i; 0 .. M) {
G[A[i]] ~= i;
G[B[i]] ~= i;
}
auto ss = new int[2 * K + 2];
foreach (k; 0 .. K) {
ss[2 * k + 0] = A[R[k]];
ss[2 * k + 1] = B[R[k]];
}
ss[2 * K + 0] = 0;
ss[2 * K + 1] = N - 1;
auto dist = new long[][](2 * K + 2, N);
foreach (x; 0 .. 2 * K + 2) {
alias Entry = Tuple!(long, "c", int, "u");
BinaryHeap!(Array!Entry, "a.c > b.c") que;
dist[x][] = INF;
dist[x][ss[x]] = 0;
que.insert(Entry(0, ss[x]));
for (; !que.empty; ) {
const c = que.front.c;
const u = que.front.u;
que.removeFront;
if (dist[x][u] == c) {
foreach (i; G[u]) {
const cc = c + C[i];
const v = A[i] ^ B[i] ^ u;
if (chmin(dist[x][v], cc)) {
que.insert(Entry(cc, v));
}
}
}
}
debug {
writeln(ss[x], ": ", dist[x]);
}
}
auto dp = new long[][](1 << K, 2 * K + 2);
foreach (p; 0 .. 1 << K) {
dp[p][] = INF;
}
dp[0][2 * K + 0] = 0;
foreach (p; 0 .. 1 << K) {
foreach (x; 0 .. 2 * K + 2) {
foreach (k; 0 .. K) if (!(p >> k & 1)) {
chmin(dp[p | 1 << k][2 * k + 1], dp[p][x] + dist[x][A[R[k]]] + C[R[k]]);
chmin(dp[p | 1 << k][2 * k + 0], dp[p][x] + dist[x][B[R[k]]] + C[R[k]]);
}
}
}
long ans = INF;
foreach (x; 0 .. 2 * K + 2) {
chmin(ans, dp[(1 << K) - 1][x] + dist[x][N - 1]);
}
writeln(ans);
}
} catch (EOFException e) {
}
}