Submission #257461

#	Time	Username	Problem	Language	Result	Execution time	Memory
257461		dolphingarlic	Guess the number (BOI20_guess)	Cpython 3	100 / 100	36 ms	3436 KiB

Guess

l, r = 1, int(input())
while 1:
  m = (l + r) // 2
  print(f'? {m}')
  a = int(input())
  if a < 0:
    l = m + 1
  if a > 0:
    r = m - 1
  if a == 0:
    print(f'= {m}')
    break

• Subtask 1: 29 / 29
• Subtask 2: 71 / 71