package com.company;
import java.util.Scanner;
public class Ibiza{
    public static void main(String[]args){
        Scanner sc=new Scanner(System.in);

        double neededExp=Double.parseDouble(sc.nextLine());
        int CountBattles=Integer.parseInt(sc.nextLine());

        double TotalExp=0.0;
        int count=0;

        for(int i=1;i<=CountBattles;i++) {
            if(neededExp>TotalExp) {
                count += 1;
                double ExpPerBattle = Double.parseDouble(sc.nextLine());
                if (i % 3 == 0) {
                    TotalExp += (ExpPerBattle * 1.15);
                    if (i % 5 == 0) {
                        TotalExp -= (ExpPerBattle * 0.9);
                    }
                }
                if (i % 5 == 0) {
                    TotalExp += (ExpPerBattle * 0.9);
                }
                if (i % 5 != 0 && i % 3 != 0) {
                    TotalExp += ExpPerBattle;
                }
            }else{
                System.out.printf("Player successfully collected his needed experience for %d battles.",count);
            }
        }
        if(TotalExp>=neededExp){
            System.out.printf("Player successfully collected his needed experience for %d battles.",count);
        }else{
            double needed=(neededExp-TotalExp)*1.0;
            System.out.printf("Player was not able to collect the needed experience, %.2f more needed.",needed);
        }

    }
}