1.3 KB | 1368 chars
"""
[30924: A+B - 10 (제2편)](https://www.acmicpc.net/problem/30924)
Tier: Silver 5
Category: arithmetic, math, randomization
"""
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
from random import randint
SYS_INPUT = True
RECURSION_LIMIT = 10 ** 7
SET_RECURSION = False
BLANK = " "
if SET_RECURSION:
sys.setrecursionlimit(RECURSION_LIMIT)
inp = lambda : sys.stdin.readline().rstrip() if SYS_INPUT else input()
mii = lambda : [*map(int,inp().split())]
mfi = lambda : [*map(float,inp().split())]
ii = lambda : int(inp())
fi = lambda : float(inp())
isplit = lambda : inp().split()
p = print
def gcd(a, b): return gcd(b, a % b) if b > 0 else a
def lcm(a, b): return a * b // gcd(a, b)
def solve():
ans_a = -1
ans_b = -1
a = {}
b = {}
while len(a) < 9999:
i = randint(1, 10000)
if a.get(i) is None:
a[i] = 1
else:
continue
print(f"? A {i}", flush=True)
k = ii()
if k == 1:
ans_a = i
break
while len(b) < 9999:
i = randint(1, 10000)
if b.get(i) is None:
b[i] = 1
else:
continue
print(f"? B {i}", flush=True)
k = ii()
if k == 1:
ans_b = i
break
print(f"! {ans_a + ans_b}")
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()