import java.util.Arrays;

import java.util.Scanner;

public class Main {

publicstaticvoidmain(String[] args) {

// TODO Auto-generated method stub

Scannerinput = newScanner(System.in);

while(input.hasNextLong())

{

longn1 = input.nextLong();

longn2 = input.nextLong();

if(n1 == 0 && n2 == 0)

{

break;

}

longn3 = n1+n2;

intc = 0;

while(n3 > 0)

{

if(n3 % 10 <= n2 % 10 && n3 % 10 < n1 % 10 || n3 % 10 < n2 % 10 && n3 % 10 <= n1 % 10)

{

c++;

}

n3 /= 10;

n2 /= 10;

n1 /= 10;

}

if(c == 0)

{

System.out.println("No carry operation.");

}

else

{

System.out.println(c + " carry operation.");

}

}

}

}

 複數形要加s

ans+" carry operations"

or

ans+" carry operation"