mission1.java

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        int i = -1;
        String out = "";
        while (i++ < line.length() - 1) {
            out += line.charAt(i++);
        }
        System.out.println(out);
    }
}