[20251020] BOJ / G5 / Ezreal 여눈부터 가네 ㅈㅈ / 설진영

Author: Seol-JY

Seol-JY/202510/20 BOJ G5 Ezreal 여눈부터 가네 ㅈㅈ.md

@@ -0,0 +1,23 @@
+```java
+import java.io.*;
+
+public class Main {
+    static final int MOD = 1_000_000_007;
+    
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        int N = Integer.parseInt(br.readLine());
+        
+        long[][] dp = new long[N + 1][3];
+        dp[1][2] = 1;
+        
+        for (int i = 2; i <= N; i++) {
+            dp[i][0] = (dp[i-1][1] + dp[i-1][2]) % MOD;
+            dp[i][1] = (dp[i-1][0] + dp[i-1][2]) % MOD;
+            dp[i][2] = (dp[i-1][0] + dp[i-1][1]) % MOD;
+        }
+        
+        System.out.println(dp[N][0]);
+    }
+}
+```