import java.io.*;

public class Hi {

public static void main(String[] args) throws IOException {
// TODO 自動產生方法 Stub
String msg;
int count;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print("77");

try {
msg = br.readLine();
count = Integer.parseInt(msg);

System.out.println(count);
} catch (NumberFormatException e) {
// TODO 自動產生 catch 區塊
System.out.println("88");
}

}

}