[20260126] BOJ / G5 / 합분해 / 강신지

Author: ksinji

ksinji/202601/26 BOJ 합분해.md

@@ -0,0 +1,35 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static int n, k;
+    static int[][] dp;
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        n = Integer.parseInt(st.nextToken());
+        k = Integer.parseInt(st.nextToken());
+
+        dp = new int[k + 1][n + 1];
+
+        for (int i = 0; i <= n; i++) {
+            dp[1][i] = 1;
+        }
+
+        for (int i = 2; i <= k; i++) {
+            for (int j = 0; j <= n; j++) {
+                if (j == 0) {
+                    dp[i][j] = 1;
+                } else {
+                    dp[i][j] = (dp[i - 1][j] + dp[i][j - 1]) % 1000000000;
+                }
+            }
+        }
+
+        System.out.println(dp[k][n]);
+    }
+}
+```