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Submission #685827

# Submission time Handle Problem Language Result Execution time Memory
685827 2023-01-25T01:49:25 Z null_awe Guess the number (BOI20_guess) C++14
100 / 100
 1 ms 256 KB 
#include <iostream>
using namespace std;

int qry(int x) {
  cout << "? " << x << endl;
  int ans; cin >> ans;
  return ans;
}

int main() {
  int n; cin >> n;
  int lo = 0, hi = n + 1;
  while (lo < hi - 1) {
    int mid = (lo + hi) >> 1;
    int ans = qry(mid);
    if (ans > 0) hi = mid;
    else lo = mid;
    if (!ans) break;
  }
  cout << "= " << lo << endl;
  return 0;
}

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 216 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 0 ms 208 KB Output is correct
20 Correct 1 ms 208 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 1 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 0 ms 208 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 0 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 0 ms 208 KB Output is correct
35 Correct 1 ms 208 KB Output is correct
36 Correct 0 ms 208 KB Output is correct
37 Correct 1 ms 208 KB Output is correct
38 Correct 1 ms 208 KB Output is correct
39 Correct 1 ms 208 KB Output is correct
40 Correct 0 ms 208 KB Output is correct
41 Correct 0 ms 208 KB Output is correct
42 Correct 1 ms 208 KB Output is correct
43 Correct 1 ms 208 KB Output is correct
44 Correct 0 ms 208 KB Output is correct

Subtask #2
71.0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 0 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 216 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 1 ms 208 KB Output is correct
17 Correct 1 ms 208 KB Output is correct
18 Correct 1 ms 208 KB Output is correct
19 Correct 0 ms 208 KB Output is correct
20 Correct 1 ms 208 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 1 ms 208 KB Output is correct
23 Correct 1 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 0 ms 208 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 0 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 0 ms 208 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 0 ms 208 KB Output is correct
35 Correct 1 ms 208 KB Output is correct
36 Correct 0 ms 208 KB Output is correct
37 Correct 1 ms 208 KB Output is correct
38 Correct 1 ms 208 KB Output is correct
39 Correct 1 ms 208 KB Output is correct
40 Correct 0 ms 208 KB Output is correct
41 Correct 0 ms 208 KB Output is correct
42 Correct 1 ms 208 KB Output is correct
43 Correct 1 ms 208 KB Output is correct
44 Correct 0 ms 208 KB Output is correct
45 Correct 1 ms 220 KB Output is correct
46 Correct 0 ms 208 KB Output is correct
47 Correct 1 ms 208 KB Output is correct
48 Correct 1 ms 208 KB Output is correct
49 Correct 1 ms 216 KB Output is correct
50 Correct 1 ms 208 KB Output is correct
51 Correct 0 ms 208 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 1 ms 208 KB Output is correct
55 Correct 1 ms 208 KB Output is correct
56 Correct 1 ms 208 KB Output is correct
57 Correct 1 ms 212 KB Output is correct
58 Correct 1 ms 216 KB Output is correct
59 Correct 1 ms 220 KB Output is correct
60 Correct 1 ms 216 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 1 ms 208 KB Output is correct
63 Correct 1 ms 208 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 1 ms 224 KB Output is correct
66 Correct 1 ms 216 KB Output is correct
67 Correct 1 ms 220 KB Output is correct
68 Correct 1 ms 216 KB Output is correct
69 Correct 1 ms 212 KB Output is correct
70 Correct 1 ms 208 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 1 ms 220 KB Output is correct
74 Correct 1 ms 220 KB Output is correct
75 Correct 1 ms 216 KB Output is correct
76 Correct 1 ms 220 KB Output is correct
77 Correct 1 ms 224 KB Output is correct
78 Correct 1 ms 220 KB Output is correct
79 Correct 1 ms 220 KB Output is correct
80 Correct 1 ms 220 KB Output is correct
81 Correct 1 ms 220 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 220 KB Output is correct
84 Correct 1 ms 220 KB Output is correct
85 Correct 1 ms 212 KB Output is correct
86 Correct 1 ms 212 KB Output is correct
87 Correct 1 ms 220 KB Output is correct
88 Correct 1 ms 220 KB Output is correct
89 Correct 1 ms 208 KB Output is correct
90 Correct 1 ms 208 KB Output is correct
91 Correct 1 ms 208 KB Output is correct
92 Correct 1 ms 208 KB Output is correct
93 Correct 1 ms 208 KB Output is correct
94 Correct 1 ms 208 KB Output is correct
95 Correct 1 ms 208 KB Output is correct
96 Correct 1 ms 208 KB Output is correct
97 Correct 1 ms 208 KB Output is correct
98 Correct 1 ms 208 KB Output is correct
99 Correct 1 ms 208 KB Output is correct
100 Correct 1 ms 208 KB Output is correct
101 Correct 1 ms 208 KB Output is correct
102 Correct 1 ms 208 KB Output is correct
103 Correct 1 ms 208 KB Output is correct
104 Correct 1 ms 208 KB Output is correct
105 Correct 1 ms 208 KB Output is correct
106 Correct 1 ms 208 KB Output is correct
107 Correct 1 ms 208 KB Output is correct
108 Correct 1 ms 220 KB Output is correct
109 Correct 1 ms 208 KB Output is correct