From a02dc4acaf1c20a7308236d26ff5e4cea582c17e Mon Sep 17 00:00:00 2001 From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com> Date: Sun, 10 Aug 2025 14:26:09 +0900 Subject: [PATCH] =?UTF-8?q?[20250810]=20BOJ=20/=20G5=20/=20=ED=83=9D?= =?UTF-8?q?=EB=B0=B0=20=EB=B0=B0=EC=86=A1=20/=20=EC=9D=B4=EC=A4=80?= =?UTF-8?q?=ED=9D=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...5\353\260\260 \353\260\260\354\206\241.md" | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 "JHLEE325/202508/10 BOJ G5 \355\203\235\353\260\260 \353\260\260\354\206\241.md" diff --git "a/JHLEE325/202508/10 BOJ G5 \355\203\235\353\260\260 \353\260\260\354\206\241.md" "b/JHLEE325/202508/10 BOJ G5 \355\203\235\353\260\260 \353\260\260\354\206\241.md" new file mode 100644 index 00000000..9d0755ea --- /dev/null +++ "b/JHLEE325/202508/10 BOJ G5 \355\203\235\353\260\260 \353\260\260\354\206\241.md" @@ -0,0 +1,76 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + + static int n, m; + static List> list = new ArrayList<>(); + + static class Node implements Comparable { + int dest, cost; + + Node(int d, int c) { + this.dest = d; + this.cost = c; + } + + @Override + public int compareTo(Node o) { + return this.cost - o.cost; + } + } + + public static void main(String[] args) throws Exception { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + StringTokenizer st; + + st = new StringTokenizer(br.readLine()); + + n = Integer.parseInt(st.nextToken()); + m = Integer.parseInt(st.nextToken()); + + for (int i = 0; i < n + 1; i++) { + list.add(new ArrayList<>()); + } + + for (int i = 0; i < m; i++) { + st = new StringTokenizer(br.readLine()); + int from = Integer.parseInt(st.nextToken()); + int to = Integer.parseInt(st.nextToken()); + int cost = Integer.parseInt(st.nextToken()); + + list.get(from).add(new Node(to, cost)); + list.get(to).add(new Node(from, cost)); + } + + dijkstra(1, n); + } + + static void dijkstra(int start, int end) { + int[] dist = new int[n + 1]; + Arrays.fill(dist, 987654321); + + PriorityQueue pq = new PriorityQueue<>(); + dist[start] = 0; + pq.add(new Node(start, 0)); + + while (!pq.isEmpty()) { + Node cur = pq.poll(); + + if (dist[cur.dest] < cur.cost) continue; + + for (Node next : list.get(cur.dest)) { + if (dist[next.dest] > dist[cur.dest] + next.cost) { + dist[next.dest] = dist[cur.dest] + next.cost; + pq.add(new Node(next.dest, dist[next.dest])); + } + } + } + + System.out.println(dist[end]); + } + +} + +```