> # include <stdio.h>
> # include <string.h>
> main()
> {     int i=0,e,m,t[10];
>       for(i=0;i<10;i++){t[i]=0;}
>       i=0;
>       for(;;)
>       {     m=getchar();if(m==EOF) break;
>             if (m=='\n') {e=i;i=0;continue;}
>             t[i]=t[i]+(m-'0');
>             if (t[i]>9) t[i]=t[i]%10;
>             i++;
>             }
>       for(i=0;i<e;i++){printf("%d",t[i]);}
>       return(0);
>       }