[20250811] BOJ / P5 / 멋진 부분집합 / 권혁준

Author: oncsr

khj20006/202508/11 BOJ P5 멋진 부분집합.md

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+```java
+import java.util.*;
+import java.io.*;
+
+class IOController {
+	BufferedReader br;
+	BufferedWriter bw;
+	StringTokenizer st;
+
+	public IOController() {
+		br = new BufferedReader(new InputStreamReader(System.in));
+		bw = new BufferedWriter(new OutputStreamWriter(System.out));
+		st = new StringTokenizer("");
+	}
+
+	String nextLine() throws Exception {
+		String line = br.readLine();
+		st = new StringTokenizer(line);
+		return line;
+	}
+
+	String nextToken() throws Exception {
+		while (!st.hasMoreTokens()) nextLine();
+		return st.nextToken();
+	}
+
+	int nextInt() throws Exception {
+		return Integer.parseInt(nextToken());
+	}
+
+	long nextLong() throws Exception {
+		return Long.parseLong(nextToken());
+	}
+
+	double nextDouble() throws Exception {
+		return Double.parseDouble(nextToken());
+	}
+
+	void close() throws Exception {
+		bw.flush();
+		bw.close();
+	}
+
+	void write(String content) throws Exception {
+		bw.write(content);
+	}
+
+}
+
+public class Main {
+
+	static IOController io;
+
+	//
+
+	static int N;
+	static int[] a;
+
+	public static void main(String[] args) throws Exception {
+
+		io = new IOController();
+
+		init();
+		solve();
+
+		io.close();
+
+	}
+
+	static void init() throws Exception {
+
+		N = io.nextInt();
+		a = new int[N];
+		for(int i=0;i<N;i++) a[i] = io.nextInt();
+
+	}
+
+	static void solve() throws Exception {
+
+		for(int t=0;t<50;t++) {
+			int idx = (int)(Math.random() * N);
+			List<Integer> primes = new ArrayList<>();
+			int A = a[idx];
+			for(int i=2;i*i<=A;i++) if(A%i == 0) {
+				primes.add(i);
+				while(A%i == 0) A /= i;
+			}
+			if(A != 1) primes.add(A);
+
+			for(int p:primes) {
+				int cnt = 0;
+				for(int i=0;i<N;i++) cnt += (a[i] % p == 0) ? 1 : 0;
+				if(cnt >= (N+1)/2) {
+					io.write("YES\n");
+					int c = 0;
+					for(int j=0;j<N;j++) if(a[j] % p == 0) {
+						c++;
+						io.write(a[j] + " ");
+						if(c == (N+1)/2) return;
+					}
+				}
+			}
+		}
+		io.write("NO");
+
+	}
+
+}
+```