package cc;

import java.util.ArrayList;

public class cc1_5 {
	public String countDup(String old) {
		int len = old.length();
		ArrayList<String> newArray = new ArrayList<String>();
		int count = 1;
		for (int i = 1; i < len; i++) {
			if (i < len - 1) {
				if (old.charAt(i - 1) == old.charAt(i)) {
					count++;
					System.out.println(count);
				} else {
					newArray.add(old.substring(i - 1, i));
					newArray.add("" + count);
					count = 1;
					System.out.println(count);
				}
			} else {
				if (old.charAt(i - 1) == old.charAt(i)) {
					count++;
					newArray.add(old.substring(i - 1, i));
					newArray.add("" + count);
					System.out.println(count);
				} else {
					newArray.add(old.substring(i - 1, i));
					newArray.add("" + count);
					newArray.add(old.substring(i, i));
					newArray.add("" + 1);
					System.out.println(count);
				}
			}
		}
		if (len < newArray.size()) {
			System.out.println(String.valueOf(old));
			return String.valueOf(old);
		} else {
			for(int i =0 ; i<newArray.size();i++){
				System.out.print(newArray.get(i));
			}
			return String.valueOf(newArray);
		}
	}

	public static void main(String[] args) {
		cc1_5 cd = new cc1_5();
		cd.countDup(args[0]);
	}
}