uri 1629 solution in c
by ujjal roy
#include<stdio.h>
main()
{
while(1)
{
int n,i;
scanf("%d",&n);
if(n==0) break;
while(n--)
{
int osum=0,esum=0,sum=0,l;
char s[15000];
scanf("%s",s);
l=strlen(s);
for(i=0;i<l;i+=2) esum+=s[i]-'0';
for(i=1;i<l;i+=2) osum+=s[i]-'0';
while(esum>0)
{
int r=esum%10;
sum+=r;
esum=esum/10;
}
while(osum>0)
{
int r=osum%10;
sum+=r;
osum=osum/10;
}
printf("%d\n",sum);
}
}
return 0;
}
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