OJ Board

#include<stdio.h>
#include<stdlib.h>

int main()
{ unsigned long int a,b,c,d;
int count=0,e=0;
while(scanf("%lu%lu",&a,&b)==2)
{ if(a<1000000000&&b<1000000000)
{
if(a==0&&b==0)
break;
while(a>9||b>9)
{
c=a%10;
d=b%10;
a=a/10;
b=b/10;
c=c+d+e;
if(c>9)
{ e=1;
count++;
}
else e=0;
}
if ...