1021 B | 1017 chars
"""
[1812: 사탕](https://www.acmicpc.net/problem/1812)
Tier: Silver 4
Category: bruteforcing, math
"""
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
SYS_INPUT = True
RECURSION_LIMIT = 10 ** 7
SET_RECURSION = False
BLANK = " "
if SET_RECURSION:
sys.setrecursionlimit(RECURSION_LIMIT)
inp = lambda : sys.stdin.readline().rstrip() if SYS_INPUT else input()
mii = lambda : [*map(int,inp().split())]
mfi = lambda : [*map(float,inp().split())]
ii = lambda : int(inp())
fi = lambda : float(inp())
isplit = lambda : inp().split()
p = print
def gcd(a, b): return gcd(b, a % b) if b > 0 else a
def lcm(a, b): return a * b // gcd(a, b)
def solve():
n = ii()
l = [ii() for _ in range(n)]
c = l[0]
for i in range(1, n):
if i % 2 == 1:
c -= l[i]
else:
c += l[i]
c //= 2
print(c)
for i in range(0, n - 1):
c = l[i] - c
print(c)
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()