import java.util.*;

public class Main {
    public static void main(String[] args) {
        TaskTen solution = new TaskTen();
        solution.solve();
    }


    static class TaskTen {
        private Scanner sc = new Scanner(System.in);
        private int money = 0;
        private List<Integer> power = new ArrayList<>();
        private List<Pair> info = new ArrayList<>();


        private static class Pair {
            int first;
            int second;

            Pair(int first, int second) {
                this.first = first;
                this.second = second;
            }
        }




        public void solve() {
            readInput();
            info.sort(Comparator.comparingInt(t -> t.second));
            power.sort(Comparator.reverseOrder());
            for(Pair pair : info){
                getOptimal(pair);
            }
            System.out.println(money);

        }


        private void getOptimal(Pair conditioner){
            for(int i : power){
                if(i <= conditioner.first){
                    money += conditioner.second;
                    power.remove((Integer) i);
                    return;
                }
            }
        }

        private void readInput() {
            int n = sc.nextInt();
            for (int i = 0; i < n; i++) {
                power.add(sc.nextInt());
            }
            int r = sc.nextInt();
            for (int i = 0; i < r; i++) {
                info.add(new Pair(sc.nextInt(), sc.nextInt()));
            }

        }


    }
}