#include<iostream>
#include<map>
#include<cstdio>
#include<vector>
using namespace std;
int main(){
	vector<int> val,n;
	char cn;
	int a,b,sum=0;
        float avr=0;
	while(cin>>a>>cn>>b){
		val.push_back(a);
		n.push_back(b);
	}
	for(int i=0;i<n.size();i++){
		sum+=(n[i]*val[i]);
		avr+=n[i];
	}
	avr /= n.size();
	printf("%d\n%.0f\n",sum,avr);
}