using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("204 507 241 694 2293 -1 -1");
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("118 378 -1 -1 -1 -1 -1");
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("1000 1000 1000 1000 1000 1000 1000");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static long[] GetSplitArr(string pStr)
    {
        return (pStr == "" ? new string[0] : pStr.Split(' ')).Select(pX => long.Parse(pX)).ToArray();
    }

    static void Main()
    {
        List<string> InputList = GetInputList();
        long[] TArr = GetSplitArr(InputList[0]);

        long Sum = 0;
        foreach (long EachA in TArr) {
            if (EachA == -1) {
                Console.WriteLine(-1);
                continue;
            }
            Sum += EachA;
            Console.WriteLine(6000 - Sum);
        }
    }
}