import sys
from xml.sax.saxutils import prepare_input_source

# sys.setrecursionlimit(200005)
# sys.set_int_max_str_digits(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
# inf = -1-(-1 << 31)
inf = -1-(-1 << 62)

# md = 10**9+7
md = 998244353

def ask(a, b):
    if a > b: a, b = b, a
    print("?", a, b, flush=True)
    return II()

sq = {1: 1, 25: 5, 36: 6, 49: 7, 64: 8, 81: 9}
n = II()
ans = [-1]*n
for i in range(n-1):
    ans[i] = ask(i, n-1)
z = ans.count(0)
ng = 0
if z == n-2:
    i = 0
    while ans[i] == 0: i += 1
    if ans[i] in sq:
        ans[i] = ans[-1] = sq[ans[i]]
    else:
        ng = 1
elif z == n-1:
    ng = 1
else:
    i = 0
    while ans[i] == 0: i += 1
    j = i+1
    while ans[j] == 0: j += 1
    ans[-1] = round(((ans[i]*ans[j])//ask(i, j))**0.5)
    for i in range(n-1): ans[i] //= ans[-1]

if ng:
    print("!", -1, flush=True)
else:
    print("! ", end="", flush=True)
    print(*ans[::-1], sep="")