View Code of Problem 86

#include <stdio.h>
int main()
{
    int a,n,j,i,sum1,sum2;
    while(~scanf("%d %d",&a,&n))
    {
    j = a,sum1 = a,sum2 = a;
    for(i = 1;i < n;i++)
    {
        j *= 10;
        sum1 += j;
        sum2 += sum1;
    }
     printf("%d\n",sum2);
    }

}