#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
vector<int>Y[200009];
vector<int>asks(int pos){
if(Y[pos].size()==2) return Y[pos];
Y[pos] = ask(pos);
return Y[pos];
}
int find_best(int n) {
int cx = 0;
while (true) {
vector<int> X1 = asks(cx);
int L = cx, R = n, M, maxn = 0, QQ = 18;
vector<int> G = {511, 1023, 4095};
for (int i = 0; i < G.size(); i++) {
vector<int> X2 = asks(min(n - 1, cx + G[i]));
if (X2 != X1) { R = min(n, cx + G[i]); break; }
}
for (int i = 0; i <= 18; i++) { if ((1 << i) >= R - L + 1) { QQ = i; break; } }
for (int i = 0; i < QQ; i++) {
M = (L + R) / 2; bool flag = false; if (R - L <= 1) flag = true;
vector<int> R1 = asks(min(n, M));
if (R1[0] + R1[1] == 0) return M;
if (X1 == R1) { L = M + 1; maxn = max(maxn, M); }
else { R = M; }
if (flag == true) break;
}
cx = maxn + 2;
}
return -1;
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:22:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < G.size(); i++) {
~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4900 KB |
Output is correct |
| 2 |
Correct |
7 ms |
5044 KB |
Output is correct |
| 3 |
Correct |
8 ms |
5044 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5104 KB |
Output is correct |
| 5 |
Correct |
7 ms |
5104 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5176 KB |
Output is correct |
| 7 |
Correct |
7 ms |
5180 KB |
Output is correct |
| 8 |
Correct |
6 ms |
5236 KB |
Output is correct |
| 9 |
Correct |
6 ms |
5236 KB |
Output is correct |
| 10 |
Correct |
7 ms |
5236 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
5236 KB |
Output is correct |
| 2 |
Correct |
8 ms |
5236 KB |
Output is correct |
| 3 |
Correct |
7 ms |
5236 KB |
Output is correct |
| 4 |
Correct |
8 ms |
5236 KB |
Output is correct |
| 5 |
Correct |
7 ms |
5256 KB |
Output is correct |
| 6 |
Correct |
7 ms |
5256 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5256 KB |
Output is correct |
| 8 |
Correct |
7 ms |
5256 KB |
Output is correct |
| 9 |
Correct |
8 ms |
5256 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5256 KB |
Output is correct |
| 11 |
Correct |
9 ms |
5256 KB |
Output is correct |
| 12 |
Correct |
8 ms |
5256 KB |
Output is correct |
| 13 |
Correct |
11 ms |
5272 KB |
Output is correct |
| 14 |
Correct |
12 ms |
5272 KB |
Output is correct |
| 15 |
Correct |
10 ms |
5276 KB |
Output is correct |
| 16 |
Correct |
43 ms |
5372 KB |
Output is correct |
| 17 |
Correct |
6 ms |
5372 KB |
Output is correct |
| 18 |
Partially correct |
58 ms |
5412 KB |
Partially correct - number of queries: 5018 |
| 19 |
Correct |
7 ms |
5412 KB |
Output is correct |
| 20 |
Correct |
26 ms |
5412 KB |
Output is correct |
| 21 |
Correct |
32 ms |
5412 KB |
Output is correct |
| 22 |
Correct |
12 ms |
5412 KB |
Output is correct |
| 23 |
Correct |
8 ms |
5412 KB |
Output is correct |
| 24 |
Correct |
8 ms |
5412 KB |
Output is correct |
| 25 |
Correct |
48 ms |
5412 KB |
Output is correct |
| 26 |
Correct |
46 ms |
5412 KB |
Output is correct |
| 27 |
Correct |
9 ms |
5412 KB |
Output is correct |
| 28 |
Correct |
32 ms |
5412 KB |
Output is correct |
| 29 |
Correct |
58 ms |
5412 KB |
Output is correct |
| 30 |
Partially correct |
59 ms |
5412 KB |
Partially correct - number of queries: 5050 |
| 31 |
Correct |
7 ms |
5412 KB |
Output is correct |
| 32 |
Correct |
8 ms |
5412 KB |
Output is correct |
| 33 |
Correct |
7 ms |
5412 KB |
Output is correct |
| 34 |
Correct |
16 ms |
5412 KB |
Output is correct |
| 35 |
Correct |
7 ms |
5412 KB |
Output is correct |
| 36 |
Correct |
20 ms |
5412 KB |
Output is correct |
| 37 |
Correct |
9 ms |
5412 KB |
Output is correct |
| 38 |
Correct |
7 ms |
5412 KB |
Output is correct |
| 39 |
Correct |
30 ms |
5412 KB |
Output is correct |
| 40 |
Correct |
32 ms |
5412 KB |
Output is correct |
| 41 |
Correct |
28 ms |
5420 KB |
Output is correct |
| 42 |
Correct |
28 ms |
5420 KB |
Output is correct |
| 43 |
Correct |
28 ms |
5420 KB |
Output is correct |
| 44 |
Correct |
30 ms |
5420 KB |
Output is correct |
| 45 |
Correct |
32 ms |
5420 KB |
Output is correct |
| 46 |
Correct |
7 ms |
5420 KB |
Output is correct |
| 47 |
Correct |
28 ms |
5420 KB |
Output is correct |
| 48 |
Correct |
60 ms |
5420 KB |
Output is correct |
| 49 |
Correct |
8 ms |
5420 KB |
Output is correct |
| 50 |
Correct |
37 ms |
5528 KB |
Output is correct |
| 51 |
Correct |
36 ms |
5528 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5528 KB |
Output is correct |
| 53 |
Correct |
12 ms |
5528 KB |
Output is correct |
| 54 |
Correct |
36 ms |
5528 KB |
Output is correct |
| 55 |
Correct |
9 ms |
5528 KB |
Output is correct |
| 56 |
Partially correct |
33 ms |
5528 KB |
Partially correct - number of queries: 5011 |
| 57 |
Correct |
48 ms |
5528 KB |
Output is correct |
| 58 |
Correct |
22 ms |
5528 KB |
Output is correct |
| 59 |
Correct |
19 ms |
5528 KB |
Output is correct |
| 60 |
Correct |
45 ms |
5528 KB |
Output is correct |
| 61 |
Correct |
10 ms |
5528 KB |
Output is correct |
| 62 |
Correct |
9 ms |
5528 KB |
Output is correct |
| 63 |
Correct |
11 ms |
5528 KB |
Output is correct |
| 64 |
Correct |
9 ms |
5528 KB |
Output is correct |
| 65 |
Correct |
8 ms |
5528 KB |
Output is correct |
| 66 |
Correct |
9 ms |
5528 KB |
Output is correct |
| 67 |
Correct |
8 ms |
5528 KB |
Output is correct |
| 68 |
Correct |
7 ms |
5528 KB |
Output is correct |
| 69 |
Correct |
7 ms |
5528 KB |
Output is correct |
| 70 |
Correct |
8 ms |
5528 KB |
Output is correct |
| 71 |
Correct |
75 ms |
5528 KB |
Output is correct |
| 72 |
Correct |
11 ms |
5528 KB |
Output is correct |
| 73 |
Correct |
59 ms |
5528 KB |
Output is correct |
| 74 |
Correct |
47 ms |
5528 KB |
Output is correct |
| 75 |
Correct |
10 ms |
5528 KB |
Output is correct |
| 76 |
Correct |
50 ms |
5528 KB |
Output is correct |
| 77 |
Correct |
56 ms |
5528 KB |
Output is correct |
| 78 |
Correct |
9 ms |
5528 KB |
Output is correct |
| 79 |
Correct |
31 ms |
5528 KB |
Output is correct |
| 80 |
Correct |
80 ms |
5528 KB |
Output is correct |
| 81 |
Correct |
52 ms |
5528 KB |
Output is correct |
| 82 |
Correct |
63 ms |
5528 KB |
Output is correct |
| 83 |
Correct |
11 ms |
5528 KB |
Output is correct |
| 84 |
Correct |
57 ms |
5528 KB |
Output is correct |
| 85 |
Correct |
29 ms |
5528 KB |
Output is correct |
| 86 |
Correct |
35 ms |
5528 KB |
Output is correct |
| 87 |
Correct |
12 ms |
5528 KB |
Output is correct |
| 88 |
Correct |
27 ms |
5528 KB |
Output is correct |
| 89 |
Correct |
39 ms |
5528 KB |
Output is correct |
| 90 |
Correct |
8 ms |
5528 KB |
Output is correct |
| 91 |
Correct |
34 ms |
5528 KB |
Output is correct |
| 92 |
Correct |
7 ms |
5528 KB |
Output is correct |
| 93 |
Correct |
11 ms |
5528 KB |
Output is correct |
| 94 |
Correct |
12 ms |
5528 KB |
Output is correct |
| 95 |
Correct |
11 ms |
5528 KB |
Output is correct |
| 96 |
Correct |
12 ms |
5528 KB |
Output is correct |
| 97 |
Correct |
5 ms |
5528 KB |
Output is correct |
