DIGIT = 100
ans = 0

for i in range(DIGIT - 1, -1, -1):
    m = 10**i
    
    for i in range(9):
        n = i + 1
        print("?", n, m)
        
        match input():
            case "<":
                continue
            case "=":
                ans = 10 * ans + n
                break
            case ">":
                ans = 10 * ans + i
                break

print("!", ans)