From 31749d7f195e4d5ed2b9864730a5ef880b974bcf Mon Sep 17 00:00:00 2001 From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com> Date: Tue, 10 Mar 2026 19:34:56 +0900 Subject: [PATCH] =?UTF-8?q?[20260310]=20BOJ=20/=20G2=20/=20=EC=B9=9C?= =?UTF-8?q?=EA=B5=AC=20=EB=84=A4=ED=8A=B8=EC=9B=8C=ED=81=AC=20/=20?= =?UTF-8?q?=EC=9D=B4=EC=A4=80=ED=9D=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...44\355\212\270\354\233\214\355\201\254.md" | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 "JHLEE325/202603/10 BOJ G2 \354\271\234\352\265\254 \353\204\244\355\212\270\354\233\214\355\201\254.md" diff --git "a/JHLEE325/202603/10 BOJ G2 \354\271\234\352\265\254 \353\204\244\355\212\270\354\233\214\355\201\254.md" "b/JHLEE325/202603/10 BOJ G2 \354\271\234\352\265\254 \353\204\244\355\212\270\354\233\214\355\201\254.md" new file mode 100644 index 00000000..e30be4cc --- /dev/null +++ "b/JHLEE325/202603/10 BOJ G2 \354\271\234\352\265\254 \353\204\244\355\212\270\354\233\214\355\201\254.md" @@ -0,0 +1,58 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + static int[] parent; + static int[] count; + + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + int T = Integer.parseInt(br.readLine()); + + StringBuilder sb = new StringBuilder(); + while (T-- > 0) { + int F = Integer.parseInt(br.readLine()); + + parent = new int[F * 2]; + count = new int[F * 2]; + for (int i = 0; i < F * 2; i++) { + parent[i] = i; + count[i] = 1; + } + + Map map = new HashMap<>(); + int id = 0; + + for (int i = 0; i < F; i++) { + StringTokenizer st = new StringTokenizer(br.readLine()); + String f1 = st.nextToken(); + String f2 = st.nextToken(); + + if (!map.containsKey(f1)) map.put(f1, id++); + if (!map.containsKey(f2)) map.put(f2, id++); + + sb.append(union(map.get(f1), map.get(f2))).append("\n"); + } + } + System.out.print(sb.toString()); + } + + static int find(int x) { + if (parent[x] == x) return x; + return parent[x] = find(parent[x]); + } + + static int union(int x, int y) { + x = find(x); + y = find(y); + + if (x != y) { + parent[y] = x; + count[x] += count[y]; + } + + return count[x]; + } +} +```