diff --git "a/\354\247\204\353\257\274\355\230\201/S4_2164" "b/\354\247\204\353\257\274\355\230\201/S4_2164"
new file mode 100644
index 0000000..579ba8f
--- /dev/null
+++ "b/\354\247\204\353\257\274\355\230\201/S4_2164"
@@ -0,0 +1,20 @@
+import java.util.*;
+import java.io.*;
+        
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        
+        int n = Integer.parseInt(br.readLine());
+        Queue<Integer> q = new LinkedList<>();
+        for(int i=1; i<=n; i++) {
+        	q.add(i);
+        }
+        while(q.size() != 1) {
+        	q.poll();
+        	int tmp = q.poll();
+        	q.add(tmp);
+        }
+        System.out.println(q.peek());
+    }   
+}