From a8df488d31e0966504e7b11df2032e2b31871e50 Mon Sep 17 00:00:00 2001 From: Jinyeong Seol Date: Tue, 29 Jul 2025 23:54:46 +0900 Subject: [PATCH] =?UTF-8?q?[20250729]=20BOJ=20/=20G5=20/=20=EC=B5=9C?= =?UTF-8?q?=EC=86=8C=EB=B9=84=EC=9A=A9=20=EA=B5=AC=ED=95=98=EA=B8=B0=20/?= =?UTF-8?q?=20=EC=84=A4=EC=A7=84=EC=98=81?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...1 \352\265\254\355\225\230\352\270\260.md" | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 "Seol-JY/202507/29 BOJ G5 \354\265\234\354\206\214\353\271\204\354\232\251 \352\265\254\355\225\230\352\270\260.md" diff --git "a/Seol-JY/202507/29 BOJ G5 \354\265\234\354\206\214\353\271\204\354\232\251 \352\265\254\355\225\230\352\270\260.md" "b/Seol-JY/202507/29 BOJ G5 \354\265\234\354\206\214\353\271\204\354\232\251 \352\265\254\355\225\230\352\270\260.md" new file mode 100644 index 00000000..95597c21 --- /dev/null +++ "b/Seol-JY/202507/29 BOJ G5 \354\265\234\354\206\214\353\271\204\354\232\251 \352\265\254\355\225\230\352\270\260.md" @@ -0,0 +1,74 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + + int n = Integer.parseInt(br.readLine()); + int m = Integer.parseInt(br.readLine()); + + ArrayDeque[] graph = new ArrayDeque[n + 1]; + for (int i = 1; i <= n; i++) { + graph[i] = new ArrayDeque<>(); + } + + for (int i = 0; i < m; i++) { + StringTokenizer st = new StringTokenizer(br.readLine()); + int from = Integer.parseInt(st.nextToken()); + int to = Integer.parseInt(st.nextToken()); + int cost = Integer.parseInt(st.nextToken()); + + graph[from].add(new Edge(to, cost)); + } + + StringTokenizer st = new StringTokenizer(br.readLine()); + int start = Integer.parseInt(st.nextToken()); + int end = Integer.parseInt(st.nextToken()); + + int[] dist = new int[n + 1]; + Arrays.fill(dist, Integer.MAX_VALUE); + dist[start] = 0; + + PriorityQueue pq = new PriorityQueue<>(); + pq.offer(new Edge(start, 0)); + + while (!pq.isEmpty()) { + Edge current = pq.poll(); + int currentNode = current.to; + int currentCost = current.cost; + + if (currentCost > dist[currentNode]) { + continue; + } + + for (Edge next : graph[currentNode]) { + int nextNode = next.to; + int nextCost = currentCost + next.cost; + + if (nextCost < dist[nextNode]) { + dist[nextNode] = nextCost; + pq.offer(new Edge(nextNode, nextCost)); + } + } + } + + System.out.println(dist[end]); + } + + static class Edge implements Comparable { + int to, cost; + + public Edge(int to, int cost) { + this.to = to; + this.cost = cost; + } + + @Override + public int compareTo(Edge o) { + return Integer.compare(this.cost, o.cost); + } + } +} +```