n=int(input())
res=[0 for _ in range(n)]
nonzero=[]
for i in range(0,n-1):
    print("? "+str(i)+" "+str(n-1))
    p=int(input())
    res[i]=p
    if p!=0:
        nonzero.append(i)
if len(nonzero)>=2:
    print("? "+str(nonzero[0])+" "+str(nonzero[1]))
    p=int(input())
    a=int((res[nonzero[0]]*res[nonzero[1]]//p)**0.5)
    ans=[str(a)]
    for i in range(n-2,-1,-1):
        ai=res[i]//a
        ans.append(str(ai))
    print("! "+"".join(ans))
elif len(nonzero)==1:
    if res[nonzero[0]]==25:
        a=5
        ans=[str(a)]
        for i in range(n-2,-1,-1):
            if i!=nonzero[0]:
                ans.append(str(0))
            else:
                ans.append(str(5))
        print("! "+"".join(ans))
    elif res[nonzero[0]]==49:
        a=7
        ans=[str(a)]
        for i in range(n-2,-1,-1):
            if i!=nonzero[0]:
                ans.append(str(0))
            else:
                ans.append(str(7))
        print("! "+"".join(ans))
    elif res[nonzero[0]]==64:
        a=8
        ans=[str(a)]
        for i in range(n-2,-1,-1):
            if i!=nonzero[0]:
                ans.append(str(0))
            else:
                ans.append(str(8))
        print("! "+"".join(ans))
    elif res[nonzero[0]]==81:
        a=9
        ans=[str(a)]
        for i in range(n-2,-1,-1):
            if i!=nonzero[0]:
                ans.append(str(0))
            else:
                ans.append(str(9))
        print("! "+"".join(ans))
    elif res[nonzero[0]]==1:
        a=1
        ans=[str(a)]
        for i in range(n-2,-1,-1):
            if i!=nonzero[0]:
                ans.append(str(0))
            else:
                ans.append(str(1))
        print("! "+"".join(ans))
    else:
        print("! -1")
else:
    print("! -1")