[20251223] BOJ / G3 / 준오는 심술쟁이!! / 한종욱

Author: Ukj0ng

Ukj0ng/202512/23 BOJ G3 준오는 심술쟁이!!.md

@@ -0,0 +1,51 @@
+```
+import java.io.*;
+import java.util.StringTokenizer;
+
+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 int MOD = (int) 1e9+7;
+    private static int[][] dp;
+    private static int s;
+    private static String str;
+
+    public static void main(String[] args) throws IOException {
+        init();
+        DP();
+
+        bw.write(dp[str.length()][s] + "\n");
+        bw.flush();
+        bw.close();
+        br.close();
+    }
+
+    private static void init() throws IOException {
+        s = Integer.parseInt(br.readLine());
+        str = br.readLine();
+
+        dp = new int[str.length()+1][s+1];
+
+        dp[0][0] = 1;
+        for (int i = 1; i <= str.length(); i++) {
+            dp[i][0] = 1;
+        }
+        for (int i = 1; i <= s && i <= 25; i++) {
+            dp[1][i] = 1;
+        }
+    }
+
+    private static void DP() {
+        for (int i = 2; i <= str.length(); i++) {
+            for (int j = 1; j <= s; j++) {
+                if (j >= 26) {
+                    int val = (dp[i][j-1] + dp[i-1][j]) % MOD;
+                    dp[i][j] = (val - dp[i-1][j-26] + MOD) % MOD;
+                } else {
+                    dp[i][j] = (dp[i][j-1] + dp[i-1][j]) % MOD;
+                }
+            }
+        }
+    }
+}
+```