[20251218] BOJ / G5 / 1, 2, 3 더하기 4 / 김민진

Author: zinnnn37

zinnnn37/202512/18 G5 1, 2, 3 더하기 4.md

@@ -0,0 +1,43 @@
+```java
+import java.io.*;
+
+public class Main {
+
+    private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    private static final StringBuilder sb = new StringBuilder();
+
+    private static int[] dp;
+
+    public static void main(String[] args) throws IOException {
+        int T = Integer.parseInt(br.readLine());
+        
+        init();
+        
+        while (T-- > 0) {
+            sol();
+        }
+        
+        bw.write(sb.toString());
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() {
+        dp = new int[10001];
+        dp[0] = 1;
+        
+        for (int num : new int[]{1, 2, 3}) {
+            for (int i = num; i <= 10000; i++) {
+                dp[i] += dp[i - num];
+            }
+        }
+    }
+
+    private static void sol() throws IOException {
+        int n = Integer.parseInt(br.readLine());
+        sb.append(dp[n]).append("\n");
+    }
+}
+```