Submission #254760

#	Time	Username	Problem	Language	Result	Execution time	Memory
254760		model_code	Guess the number (BOI20_guess)	Cpython 3	100 / 100	34 ms	3412 KiB

Guess

#!/usr/bin/env python3

a, b = 1, int(input())

while a < b:
    m = (a + b) // 2
    print("? {}".format(m), flush=True)

    ans = int(input())
    if ans < 0:
        a = m + 1
    elif ans > 0:
        b = m - 1
    else:
        a = b = m

print("= {}".format(a))

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