online_judge_1143

#include <iostream>
#include <cstring>
#include <cstdio>

using namespace std;

int main()
{
char str1[12],str2[12];
int ans,len1,len2;
int i,value;
while(scanf("%s%s",str1,str2)!=EOF)
{
if(strcmp(str1, "0")==0 && strcmp(str2, "0")==0)
break;
ans = 0;
value = 0;
len1 = strlen(str1);
len2 = strlen(str2);
for(i=1; i<=len1 && i<=len2; ++i)
{
if((str1[len1-i]+str2[len2-i]+value-'0'-'0')>9)
{
value = 1;
ans++;
}
}
while(i<=len1)
{
if((str1[len1-i]+value-'0')>9)
{
value = 1;
ans++;
}
++i;
}
while(i<=len2)
{
if((str2[len2-i]+value-'0')>9)
{
value = 1;
ans++;
}
++i;
}
if(ans > 1)
{
printf("%d carry operations.\n",ans);
}
else if(ans == 1)
{
printf("%d carry operation.\n",ans);
}
else
{
printf("NO carry operation.\n");
}
}
return 0;
}

operations

operations