#!/usr/bin/env python3
# -*- coding: utf-8-auto -*-

t = list(map(int, input().split()))

not_finish_flag = False
sum_ = 0
for i in range(len(t)):
    if t[i] == -1:
        print(-1)
        not_finish_flag = True
        continue

    if not_finish_flag:
        print(-1)
        continue

    temp = sum_ + t[i]

    if temp > 6000:
        print(-1)
        not_finish_flag = True
        continue

    sum_ = temp
    print(6000 - sum_)