import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random
#sys.setrecursionlimit(10**9)
#sys.set_int_max_str_digits(0)
#input = sys.stdin.readline
a = input().rstrip()
print('?',a+a,flush=True)
for i in range(100):
    x,y = input().split()
    if x == '!':
        exit()
    print('?',y[-1]+a,flush=True)