import java.util.Scanner;

class Test {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String sen = in.next();

		String data = "";
		char no = 0;

		for(int i=1; i<=sen.length(); i++) {
			data = data + String.valueOf((char)(sen.charAt(i) + i));
		}

		System.out.println(data);
	}
}