diff --git a/khj20006/202512/20 BOJ G4 Messi Gimossi.md b/khj20006/202512/20 BOJ G4 Messi Gimossi.md
new file mode 100644
index 00000000..7fc4d174
--- /dev/null
+++ b/khj20006/202512/20 BOJ G4 Messi Gimossi.md	
@@ -0,0 +1,55 @@
+```java
+import java.sql.Array;
+import java.util.*;
+import java.io.*;
+
+public class Main {
+
+    static BufferedReader br;
+    static BufferedWriter bw;
+
+    static int N, K = 0;
+    static int[] len;
+
+    public static void main(String[] args) throws Exception {
+
+        input();
+        solve();
+
+    }
+
+    public static void input() throws Exception {
+        br = new BufferedReader(new InputStreamReader(System.in));
+
+        N = Integer.parseInt(br.readLine());
+        len = new int[100];
+        len[1] = 5;
+        len[2] = 13;
+        for(int i=3;;i++) {
+            len[i] = len[i-1] + len[i-2] + 1;
+            K = i;
+            if(len[i] >= N) break;
+        }
+
+        br.close();
+    }
+
+    public static void solve() throws Exception {
+        bw = new BufferedWriter(new OutputStreamWriter(System.out));
+
+        char res = get(K, N);
+        bw.write((res == ' ' ? "Messi Messi Gimossi" : res) + "\n");
+
+        bw.close();
+    }
+
+    public static char get(int n, int k) {
+        if(n == 1) return "Messi".charAt(k-1);
+        if(n == 2) return "Messi Gimossi".charAt(k-1);
+        if(k == len[n-1] + 1) return ' ';
+        if(k > len[n-1]) return get(n-2, k-len[n-1]-1);
+        return get(n-1, k);
+    }
+
+}
+```