import sys
import math

# 入力高速化
#input = sys.stdin.readline
# 再帰回数上限
sys.setrecursionlimit(10**9)

# よくあるmod
#MOD = 1000000007
MOD = 998244353

def is_inside(y, x, h, w):
  return (0 <= y < h and 0 <= x < w)

def solve():
    # 解答ここから
    T = list(map(int, input().split(' ')))
    ans = 6000
    flag = False
    for t in T:
        if t == -1: flag = True
        else: ans -= t
        if flag or ans < 0: print(-1)
        else: print(ans)
    
if __name__ == '__main__':
    T = 1
    for _ in range(T):
        solve()