#include <iostream>
#include <vector>
#include <list>
#include <algorithm>
#include <string>
#include <stack>
#include <iomanip>
#include <numeric>
#include <queue>
#include <climits>
#include <complex>
#include <cmath>
#include <map>
using namespace std;
using ll = long long;
#define MOD 1000000007
#define INF 1LL << 59

int main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    //cout << fixed << setprecision(3);

    int sum = 0, kosu = 0, cnt = 0;

    int s, k;
    while (scanf("%d,%d", &s, &k) != EOF)
    {
        sum += s * k;
        kosu += k;
        cnt++;
    }

    cout << sum << "\n"
         << round((double)kosu / cnt) << endl;
    return 0;
}
