#include <bits/stdc++.h>
using namespace std;
int F(int a,int b){
	string A=to_string(a);
	string B=to_string(b);
	string C=A+B;
	int ans=stoi(C);
	return ans;
}
int getSum(int arr[],int n){
	int sum=0;
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			sum=sum+F(arr[i],arr[j]);
 
		}
	}
	return sum;
}
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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