View Code of Problem 86

#include<stdio.h>
int main()
{
    int i,a,n,sum,t;
    scanf("%d%d",&a,&n);
    sum=a;
    t=a;
    for(i=1;i<n;i++)
    {
        a=a*10+t;
        sum+=a;
    }
    printf("%d",sum);
    return 0;
}