#include <iostream>
#include <math.h>
#include <string>
#include <stdio.h>
#include <stdlib.h>
using namespace std;

int main(){
  int carried=0;
  int k;
  char n1[11],n2[11],digit[2];
  int n3[11],n4[11];
  int carry=0,sum;
  string  num1, num2, temp;

  while(cin >> num1 >> num2){
    if(num1=="0" && num2=="0"){
      break;
    }
    carried=0;
    carry =0;
    if(num2.size()>num1.size()){
      temp = num1;
      num1=num2;
      num2=temp;
    }

    k=0;
    for(int i=num1.size()-1;i>=0;i--){
      n1[10-k]=num1[i];
      k++;
    }
    for(int i=num1.size();i<10;i++){
      n1[10-i]='0';
    }
    k=0;
    for(int i=num2.size()-1;i>=0;i--){
      n2[10-k]=num2[i];
      k++;
    }
    for(int i=num2.size();i<10;i++){
      n2[10-i]='0';
    }

    for(int i=10;i>0;i--){
      digit[0]=n1[i];
      digit[1]='\0';
      n3[i]=atoi(digit);

      digit[0]=n2[i];
      digit[1]='\0';
      n4[i]=atoi(digit);

    }

    k=10;
    while(k>0){
      sum=n3[k]+n4[k]+carry;
      //cout << n3[k] << " + " << n4[k] << " + " << carry << " = " << sum << endl;
      //cout << k << endl;
      if(sum>=10){
	carried++;
	carry=1;
      }
      else{
	carry=0;
      }
      k--;
    }
    for(int i=9;i>0;i--){
      n3[i]=0;
      n4[i]=0;
       n1[i]='0';
        n2[i]='0';
    }

    if(carried==0){
      cout << "No carry operation." << endl;
    }
    else if(carried==1){
      cout << carried << " carry operation." << endl;
    }
    else{
       cout << carried << " carry operations." << endl;
    }
  }
  


  return 0;

}

/*
#include <iostream>
#include <math.h>

using namespace std;

int main(){
  int exponent=1,carried=0;
  double base;
  unsigned int digit1, digit2, carry=0;
  unsigned int num1, num2, sum;
  unsigned int temp;

  while(cin >> num1 >> num2){

    if(num2>num1){
      temp = num1;
      num1=num2;
      num2=temp;
    }
    base= pow(10,exponent);
    while(base<num1){
      digit1=num1%(unsigned int)base;
      digit2=num2%(unsigned int)base;
      sum = digit1+digit2+carry;
      if(sum>=10){
	carry=1;
	carried++;
      }
      else{
	carry=0;
      }

      exponent++;
      base = pow(10,exponent);
    }
  }



  return 0;

}


    if(num2.size()>num1.size()){
      temp = num1;
      num1=num2;
      num2=temp;
    }
    for(int i=10;i<;i--){
      digit1=atoi(num1[i]);
      digit2=atoi(num2[i]);
      sum=digit1+digit2+carry;
      if(sum>=10){
	carry=1;
	carried++;
      }
      else{
	carry=0;
      }
    }

*/