#include <bits/stdc++.h>
using namespace std;
int getPower(int x){
	int count=0;
	while(x!=0){
       x=x/10;
       count++;
	}
	return count;
}
 
int getSum(int arr[],int n){
	int sum=arr[0];
	int ans=0;
	for(int j=1;j<n;j++){
		int y=getPower(arr[j]);
		int val=((j-1)+1)*arr[j]+sum*pow(10,y);
		ans=ans+val;
		sum=sum+arr[j];
 
	}
	return ans;
}
int main() {
	// your code goes here
	int arr[]={3,14,15};
	int n=sizeof(arr)/sizeof(arr[0]);
	cout<<"The sum is:"<<getSum(arr,n);
	return 0;
}

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