Submission #257460

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
257460	2020-08-04T09:43:24 Z	dolphingarlic	Guess the number (BOI20_guess)	Python 3	100 / 100	32 ms	3564 KB

Guess

import sys
n = int(input())
l = 1
r = n
while True:
  mid = (l + r) // 2
  print(f'? {mid}')
  sys.stdout.flush()
  res = int(input())
  if res == -1:
    l = mid + 1
  elif res == 1:
    r = mid - 1
  else:
    print(f'= {mid}')
    sys.stdout.flush()
    break

Subtask #1

29.0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	3308 KB	Output is correct
2	Correct	20 ms	3308 KB	Output is correct
3	Correct	20 ms	3308 KB	Output is correct
4	Correct	20 ms	3308 KB	Output is correct
5	Correct	19 ms	3308 KB	Output is correct
6	Correct	20 ms	3300 KB	Output is correct
7	Correct	21 ms	3308 KB	Output is correct
8	Correct	21 ms	3308 KB	Output is correct
9	Correct	21 ms	3308 KB	Output is correct
10	Correct	24 ms	3308 KB	Output is correct
11	Correct	20 ms	3292 KB	Output is correct
12	Correct	20 ms	3308 KB	Output is correct
13	Correct	21 ms	3300 KB	Output is correct
14	Correct	21 ms	3300 KB	Output is correct
15	Correct	19 ms	3308 KB	Output is correct
16	Correct	24 ms	3308 KB	Output is correct
17	Correct	19 ms	3308 KB	Output is correct
18	Correct	20 ms	3308 KB	Output is correct
19	Correct	23 ms	3308 KB	Output is correct
20	Correct	19 ms	3300 KB	Output is correct
21	Correct	22 ms	3300 KB	Output is correct
22	Correct	19 ms	3308 KB	Output is correct
23	Correct	21 ms	3356 KB	Output is correct
24	Correct	19 ms	3308 KB	Output is correct
25	Correct	20 ms	3308 KB	Output is correct
26	Correct	19 ms	3308 KB	Output is correct
27	Correct	25 ms	3308 KB	Output is correct
28	Correct	20 ms	3308 KB	Output is correct
29	Correct	25 ms	3300 KB	Output is correct
30	Correct	20 ms	3308 KB	Output is correct
31	Correct	22 ms	3308 KB	Output is correct
32	Correct	20 ms	3308 KB	Output is correct
33	Correct	19 ms	3308 KB	Output is correct
34	Correct	19 ms	3300 KB	Output is correct
35	Correct	19 ms	3308 KB	Output is correct
36	Correct	24 ms	3472 KB	Output is correct
37	Correct	21 ms	3308 KB	Output is correct
38	Correct	22 ms	3300 KB	Output is correct
39	Correct	20 ms	3300 KB	Output is correct
40	Correct	21 ms	3292 KB	Output is correct
41	Correct	20 ms	3332 KB	Output is correct
42	Correct	20 ms	3308 KB	Output is correct
43	Correct	20 ms	3308 KB	Output is correct
44	Correct	20 ms	3308 KB	Output is correct

Subtask #2

71.0 / 71.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	3308 KB	Output is correct
2	Correct	20 ms	3308 KB	Output is correct
3	Correct	20 ms	3308 KB	Output is correct
4	Correct	20 ms	3308 KB	Output is correct
5	Correct	19 ms	3308 KB	Output is correct
6	Correct	20 ms	3300 KB	Output is correct
7	Correct	21 ms	3308 KB	Output is correct
8	Correct	21 ms	3308 KB	Output is correct
9	Correct	21 ms	3308 KB	Output is correct
10	Correct	24 ms	3308 KB	Output is correct
11	Correct	20 ms	3292 KB	Output is correct
12	Correct	20 ms	3308 KB	Output is correct
13	Correct	21 ms	3300 KB	Output is correct
14	Correct	21 ms	3300 KB	Output is correct
15	Correct	19 ms	3308 KB	Output is correct
16	Correct	24 ms	3308 KB	Output is correct
17	Correct	19 ms	3308 KB	Output is correct
18	Correct	20 ms	3308 KB	Output is correct
19	Correct	23 ms	3308 KB	Output is correct
20	Correct	19 ms	3300 KB	Output is correct
21	Correct	22 ms	3300 KB	Output is correct
22	Correct	19 ms	3308 KB	Output is correct
23	Correct	21 ms	3356 KB	Output is correct
24	Correct	19 ms	3308 KB	Output is correct
25	Correct	20 ms	3308 KB	Output is correct
26	Correct	19 ms	3308 KB	Output is correct
27	Correct	25 ms	3308 KB	Output is correct
28	Correct	20 ms	3308 KB	Output is correct
29	Correct	25 ms	3300 KB	Output is correct
30	Correct	20 ms	3308 KB	Output is correct
31	Correct	22 ms	3308 KB	Output is correct
32	Correct	20 ms	3308 KB	Output is correct
33	Correct	19 ms	3308 KB	Output is correct
34	Correct	19 ms	3300 KB	Output is correct
35	Correct	19 ms	3308 KB	Output is correct
36	Correct	24 ms	3472 KB	Output is correct
37	Correct	21 ms	3308 KB	Output is correct
38	Correct	22 ms	3300 KB	Output is correct
39	Correct	20 ms	3300 KB	Output is correct
40	Correct	21 ms	3292 KB	Output is correct
41	Correct	20 ms	3332 KB	Output is correct
42	Correct	20 ms	3308 KB	Output is correct
43	Correct	20 ms	3308 KB	Output is correct
44	Correct	20 ms	3308 KB	Output is correct
45	Correct	20 ms	3308 KB	Output is correct
46	Correct	21 ms	3308 KB	Output is correct
47	Correct	21 ms	3308 KB	Output is correct
48	Correct	22 ms	3308 KB	Output is correct
49	Correct	27 ms	3308 KB	Output is correct
50	Correct	23 ms	3308 KB	Output is correct
51	Correct	29 ms	3304 KB	Output is correct
52	Correct	21 ms	3308 KB	Output is correct
53	Correct	21 ms	3300 KB	Output is correct
54	Correct	22 ms	3308 KB	Output is correct
55	Correct	22 ms	3360 KB	Output is correct
56	Correct	20 ms	3308 KB	Output is correct
57	Correct	22 ms	3300 KB	Output is correct
58	Correct	32 ms	3308 KB	Output is correct
59	Correct	21 ms	3308 KB	Output is correct
60	Correct	22 ms	3308 KB	Output is correct
61	Correct	21 ms	3308 KB	Output is correct
62	Correct	22 ms	3308 KB	Output is correct
63	Correct	20 ms	3308 KB	Output is correct
64	Correct	20 ms	3308 KB	Output is correct
65	Correct	21 ms	3308 KB	Output is correct
66	Correct	24 ms	3308 KB	Output is correct
67	Correct	23 ms	3300 KB	Output is correct
68	Correct	21 ms	3300 KB	Output is correct
69	Correct	22 ms	3300 KB	Output is correct
70	Correct	20 ms	3324 KB	Output is correct
71	Correct	23 ms	3300 KB	Output is correct
72	Correct	20 ms	3308 KB	Output is correct
73	Correct	22 ms	3308 KB	Output is correct
74	Correct	20 ms	3300 KB	Output is correct
75	Correct	20 ms	3300 KB	Output is correct
76	Correct	21 ms	3308 KB	Output is correct
77	Correct	20 ms	3308 KB	Output is correct
78	Correct	20 ms	3308 KB	Output is correct
79	Correct	22 ms	3308 KB	Output is correct
80	Correct	20 ms	3308 KB	Output is correct
81	Correct	22 ms	3308 KB	Output is correct
82	Correct	22 ms	3300 KB	Output is correct
83	Correct	20 ms	3308 KB	Output is correct
84	Correct	20 ms	3308 KB	Output is correct
85	Correct	23 ms	3308 KB	Output is correct
86	Correct	22 ms	3300 KB	Output is correct
87	Correct	23 ms	3272 KB	Output is correct
88	Correct	20 ms	3308 KB	Output is correct
89	Correct	21 ms	3300 KB	Output is correct
90	Correct	23 ms	3328 KB	Output is correct
91	Correct	21 ms	3308 KB	Output is correct
92	Correct	21 ms	3308 KB	Output is correct
93	Correct	23 ms	3308 KB	Output is correct
94	Correct	23 ms	3300 KB	Output is correct
95	Correct	22 ms	3308 KB	Output is correct
96	Correct	21 ms	3300 KB	Output is correct
97	Correct	21 ms	3308 KB	Output is correct
98	Correct	21 ms	3308 KB	Output is correct
99	Correct	23 ms	3308 KB	Output is correct
100	Correct	20 ms	3308 KB	Output is correct
101	Correct	21 ms	3564 KB	Output is correct
102	Correct	20 ms	3308 KB	Output is correct
103	Correct	21 ms	3308 KB	Output is correct
104	Correct	21 ms	3308 KB	Output is correct
105	Correct	21 ms	3300 KB	Output is correct
106	Correct	20 ms	3308 KB	Output is correct
107	Correct	21 ms	3300 KB	Output is correct
108	Correct	21 ms	3308 KB	Output is correct
109	Correct	23 ms	3308 KB	Output is correct