/* do-while 文の例 */
import java.io.*;
class Foo {
    public static void main (String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(
                            new InputStreamReader(System.in));
	int answer = 34, input;
	do {
	    input = Integer.parseInt(br.readLine());            
	} while (input != answer); // 入力が34と等しくなるまで繰り返す
    }
}