Merge pull request #1038 from AlgorithmWithGod/zinnnn37

[20251004] BOJ / G5 / 합분해 / 김민진

Author: ShinHeeEul

zinnnn37/202510/4 BOJ G5 합분해.md

@@ -0,0 +1,44 @@
+```java
+import java.io.*;
+import java.util.Arrays;
+import java.util.StringTokenizer;
+
+public class BJ_2225_합분해 {
+
+	private static final int MOD = 1_000_000_000;
+
+	private static final BufferedReader  br = new BufferedReader(new InputStreamReader(System.in));
+	private static final BufferedWriter  bw = new BufferedWriter(new OutputStreamWriter(System.out));
+	private static       StringTokenizer st;
+
+	private static int N, K;
+	private static int[] dp;
+
+	public static void main(String[] args) throws IOException {
+		init();
+		sol();
+	}
+
+	private static void init() throws IOException {
+		st = new StringTokenizer(br.readLine());
+		N  = Integer.parseInt(st.nextToken());
+		K  = Integer.parseInt(st.nextToken());
+
+		dp = new int[N + 1];
+		Arrays.fill(dp, 1);
+	}
+
+	private static void sol() throws IOException {
+		for (int j = 1; j < K; j++) {
+			for (int i = 1; i <= N; i++) {
+				dp[i] = (dp[i - 1] + dp[i]) % MOD;
+			}
+		}
+		bw.write(dp[N] + "\n");
+		bw.flush();
+		bw.close();
+		br.close();
+	}
+
+}
+```