package src;

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


public class Carry {

    public static void main(String[] args) throws IOException {
        Carry carry = new Carry();
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

        String line;

        while ((line = input.readLine()) != null && line.length() != 0) {
            String[] inputNumbers = line.split(" ");
            int first = Integer.parseInt(inputNumbers[0]);
            int second = Integer.parseInt(inputNumbers[1]);
            int carryCount = carry.computeCarry(first, second);

            if (carryCount == 0) {
                System.out.println("No carry operation.");
            }
            else {
                String s = (carryCount == 1) ? "" : "s";
                System.out.println(carryCount + " carry operation" + s + ".");
            }
        }
    }

    /*
     * Computes and prints the number of 'carry' operations when adding two
     * positive integers of <10 digits.
     */
    private int computeCarry(int first, int second) {
        // ensure first is > second
        if (second > first) {
            int temp = second;
            second = first;
            first = temp;
        }

        int carryCount = 0;
        int carryOver = 0;
        for (int i = 1; i < (Integer.toString(second).length()); i ++) {
            int carry = (int) ((first % Math.pow(10, i)) + (second % Math.pow(10, i))) + carryOver;
            if (carry >= 10) {
                carryCount++;
                carryOver = carry % 10;
            }
        }
        return carryCount;
    }



}