From 3d5c2b6b2ba71f40ca3a9bdaf962ea3387c421f6 Mon Sep 17 00:00:00 2001 From: Jinyeong Seol Date: Wed, 17 Dec 2025 23:50:19 +0900 Subject: [PATCH] =?UTF-8?q?[20251217]=20BOJ=20/=20G4=20/=20=EC=9A=B4?= =?UTF-8?q?=EB=8F=99=20/=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 --- ...4 \354\232\264\353\217\231.md\342\200\216" | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 "Seol-JY/202512/17 BOJ G4 \354\232\264\353\217\231.md\342\200\216" diff --git "a/Seol-JY/202512/17 BOJ G4 \354\232\264\353\217\231.md\342\200\216" "b/Seol-JY/202512/17 BOJ G4 \354\232\264\353\217\231.md\342\200\216" new file mode 100644 index 00000000..06c691d4 --- /dev/null +++ "b/Seol-JY/202512/17 BOJ G4 \354\232\264\353\217\231.md\342\200\216" @@ -0,0 +1,47 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + static final int INF = 100_000_000; + + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + StringTokenizer st = new StringTokenizer(br.readLine()); + + int V = Integer.parseInt(st.nextToken()); + int E = Integer.parseInt(st.nextToken()); + + int[][] dist = new int[V + 1][V + 1]; + + for (int i = 1; i <= V; i++) { + Arrays.fill(dist[i], INF); + } + + for (int i = 0; i < E; i++) { + st = new StringTokenizer(br.readLine()); + int a = Integer.parseInt(st.nextToken()); + int b = Integer.parseInt(st.nextToken()); + int c = Integer.parseInt(st.nextToken()); + dist[a][b] = c; + } + + for (int k = 1; k <= V; k++) { + for (int i = 1; i <= V; i++) { + for (int j = 1; j <= V; j++) { + if (dist[i][k] + dist[k][j] < dist[i][j]) { + dist[i][j] = dist[i][k] + dist[k][j]; + } + } + } + } + + int ans = INF; + for (int i = 1; i <= V; i++) { + ans = Math.min(ans, dist[i][i]); + } + + System.out.println(ans == INF ? -1 : ans); + } +} +```