#include <iostream>
#include <cmath>
#include <vector>

using namespace std;

int main() {
    int N;
    cin >> N;
    vector<int> price(N);
    for (int i = 0; i < N; ++i) {
        double p;
        cin >> p;
        price[i] = round(p * 100); // 将价格转换为分存储
    }

    vector<int> count(N, 0);        //用来输出有多少碗的    
    long long total_sum = 0; // 总营业额，单位为分

    int k, m;
    while (cin >> k >> m && k != 0) {       
        count[k - 1] += m;      //k为碗的编号   m为碗数
        total_sum += price[k - 1] * m;
    }

    for (int i = 0; i < N; ++i) {
        cout << count[i] << endl;
    }

    printf("%.2f\n", total_sum / 100.0); // 转换为元并保留两位小数

    return 0;
}