n = int(input())

def ask(l, r):
    print("?", l, r, flush=True)
    return int(input())

x = ask(2, n)
P = [0] * n
P[0] = n * (n + 1) // 2 - x
tot = P[0]
for r in range(2, n):
    x = ask(1, r)
    P[r - 1] = x - tot
    tot = x
P[-1] = n * (n + 1) // 2 - tot
print("!", *P)