import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.PrintStream;

public class Main {
    public static BufferedInputStream in = new BufferedInputStream(System.in);
    public static void main(String[] args) throws IOException {
        PrintStream out = new PrintStream(System.out);
        int n;
        while ((n = nextInt()) != 42)
            out.println(n);
        in.close();
        out.close();
    }

    public static int nextInt() throws IOException {
        int number = 0;
        int digit;
        while ((digit = in.read()) != '\r' && digit != -1)
            number = number*10 + digit - '0';
        if (digit == '\r')
            in.skip(1);
        return number;
    }
}