#include <iostream>
#include <stack>
using namespace std;

int main() {
	int sum = 0;
	stack<int> s;
	int t;
	while(cin>>t) {
		if(t==0) break;
		s.push(t);
		sum += s.size() * t;
	}
	cout<<sum<<endl;
	while(!s.empty()) {
		cout<<s.top();
		s.pop();
	}
	cout<<endl;

	return 0;
}