View Code of Problem 86

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