#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
bool asked[200000] = {false};
int L[200000], R[200000];
map<int, set<int>> queries;
bool Ask(int i)
{
if (asked[i]) return L[i] + R[i] == 0;
asked[i] = true;
vector<int> res = ask(i);
L[i] = res[0], R[i] = res[1];
if (queries.find(L[i] + R[i]) == queries.end())
queries[L[i] + R[i]] = set<int>();
queries[L[i] + R[i]].insert(i);
return L[i] + R[i] == 0;
}
int Find(int l, int r)
{
for (auto [x, s] : queries)
{
auto it1 = s.upper_bound(l), it2 = s.lower_bound(r);
if (it1 == s.begin() || it2 == s.end()) continue;
if (L[*prev(it1)] == L[*it2]) return -1;
}
int m = (l + r) / 2;
if (Ask(m)) return m;
if (R[l] == R[r] && L[r] == L[l]) return -1;
int x = Find(l, m);
if (x >= 0) return x;
if (Ask(m+1)) return m+1;
int y = Find(m + 1, r);
if (y >= 0) return y;
return -1;
}
int find_best(int n)
{
if (Ask(0)) return 0;
if (Ask(n-1)) return n-1;
return Find(0, n - 1);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
336 KB |
Output is correct |
| 2 |
Correct |
1 ms |
300 KB |
Output is correct |
| 3 |
Correct |
1 ms |
304 KB |
Output is correct |
| 4 |
Correct |
0 ms |
304 KB |
Output is correct |
| 5 |
Correct |
1 ms |
208 KB |
Output is correct |
| 6 |
Correct |
1 ms |
308 KB |
Output is correct |
| 7 |
Correct |
0 ms |
208 KB |
Output is correct |
| 8 |
Correct |
0 ms |
320 KB |
Output is correct |
| 9 |
Correct |
0 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
356 KB |
Output is correct |
| 2 |
Correct |
1 ms |
336 KB |
Output is correct |
| 3 |
Correct |
1 ms |
304 KB |
Output is correct |
| 4 |
Correct |
1 ms |
304 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
0 ms |
316 KB |
Output is correct |
| 7 |
Correct |
1 ms |
316 KB |
Output is correct |
| 8 |
Correct |
0 ms |
300 KB |
Output is correct |
| 9 |
Correct |
0 ms |
288 KB |
Output is correct |
| 10 |
Correct |
1 ms |
316 KB |
Output is correct |
| 11 |
Correct |
6 ms |
728 KB |
Output is correct |
| 12 |
Correct |
1 ms |
296 KB |
Output is correct |
| 13 |
Correct |
15 ms |
1468 KB |
Output is correct |
| 14 |
Correct |
4 ms |
336 KB |
Output is correct |
| 15 |
Correct |
16 ms |
672 KB |
Output is correct |
| 16 |
Partially correct |
745 ms |
2408 KB |
Partially correct - number of queries: 6377 |
| 17 |
Correct |
1 ms |
304 KB |
Output is correct |
| 18 |
Partially correct |
936 ms |
2676 KB |
Partially correct - number of queries: 7546 |
| 19 |
Correct |
1 ms |
304 KB |
Output is correct |
| 20 |
Correct |
46 ms |
752 KB |
Output is correct |
| 21 |
Correct |
105 ms |
1132 KB |
Output is correct |
| 22 |
Correct |
6 ms |
568 KB |
Output is correct |
| 23 |
Correct |
1 ms |
340 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
200 ms |
1620 KB |
Output is correct |
| 26 |
Correct |
201 ms |
1524 KB |
Output is correct |
| 27 |
Correct |
1 ms |
416 KB |
Output is correct |
| 28 |
Partially correct |
705 ms |
2572 KB |
Partially correct - number of queries: 6592 |
| 29 |
Partially correct |
419 ms |
2256 KB |
Partially correct - number of queries: 5118 |
| 30 |
Partially correct |
914 ms |
2732 KB |
Partially correct - number of queries: 7676 |
| 31 |
Correct |
1 ms |
336 KB |
Output is correct |
| 32 |
Correct |
11 ms |
1096 KB |
Output is correct |
| 33 |
Correct |
0 ms |
208 KB |
Output is correct |
| 34 |
Correct |
86 ms |
1020 KB |
Output is correct |
| 35 |
Correct |
4 ms |
720 KB |
Output is correct |
| 36 |
Correct |
44 ms |
832 KB |
Output is correct |
| 37 |
Correct |
2 ms |
560 KB |
Output is correct |
| 38 |
Correct |
1 ms |
296 KB |
Output is correct |
| 39 |
Correct |
165 ms |
1300 KB |
Output is correct |
| 40 |
Partially correct |
685 ms |
2756 KB |
Partially correct - number of queries: 6662 |
| 41 |
Correct |
283 ms |
1736 KB |
Output is correct |
| 42 |
Correct |
292 ms |
1812 KB |
Output is correct |
| 43 |
Correct |
231 ms |
1632 KB |
Output is correct |
| 44 |
Correct |
134 ms |
1216 KB |
Output is correct |
| 45 |
Correct |
74 ms |
984 KB |
Output is correct |
| 46 |
Correct |
1 ms |
336 KB |
Output is correct |
| 47 |
Correct |
135 ms |
1220 KB |
Output is correct |
| 48 |
Partially correct |
451 ms |
2096 KB |
Partially correct - number of queries: 5528 |
| 49 |
Correct |
9 ms |
464 KB |
Output is correct |
| 50 |
Partially correct |
921 ms |
2728 KB |
Partially correct - number of queries: 7648 |
| 51 |
Correct |
136 ms |
1248 KB |
Output is correct |
| 52 |
Correct |
1 ms |
300 KB |
Output is correct |
| 53 |
Correct |
3 ms |
688 KB |
Output is correct |
| 54 |
Correct |
152 ms |
1320 KB |
Output is correct |
| 55 |
Correct |
1 ms |
304 KB |
Output is correct |
| 56 |
Partially correct |
936 ms |
2732 KB |
Partially correct - number of queries: 7651 |
| 57 |
Partially correct |
433 ms |
1976 KB |
Partially correct - number of queries: 5410 |
| 58 |
Partially correct |
419 ms |
1988 KB |
Partially correct - number of queries: 5266 |
| 59 |
Correct |
298 ms |
1876 KB |
Output is correct |
| 60 |
Correct |
257 ms |
1760 KB |
Output is correct |
| 61 |
Correct |
3 ms |
692 KB |
Output is correct |
| 62 |
Correct |
1 ms |
336 KB |
Output is correct |
| 63 |
Correct |
3 ms |
720 KB |
Output is correct |
| 64 |
Correct |
2 ms |
584 KB |
Output is correct |
| 65 |
Correct |
1 ms |
464 KB |
Output is correct |
| 66 |
Correct |
1 ms |
336 KB |
Output is correct |
| 67 |
Correct |
1 ms |
316 KB |
Output is correct |
| 68 |
Correct |
1 ms |
336 KB |
Output is correct |
| 69 |
Correct |
1 ms |
304 KB |
Output is correct |
| 70 |
Correct |
1 ms |
300 KB |
Output is correct |
| 71 |
Partially correct |
978 ms |
2772 KB |
Partially correct - number of queries: 8104 |
| 72 |
Correct |
21 ms |
1372 KB |
Output is correct |
| 73 |
Partially correct |
926 ms |
2832 KB |
Partially correct - number of queries: 7999 |
| 74 |
Partially correct |
926 ms |
2892 KB |
Partially correct - number of queries: 8044 |
| 75 |
Correct |
3 ms |
720 KB |
Output is correct |
| 76 |
Partially correct |
734 ms |
2768 KB |
Partially correct - number of queries: 7024 |
| 77 |
Partially correct |
927 ms |
2852 KB |
Partially correct - number of queries: 7648 |
| 78 |
Correct |
15 ms |
1464 KB |
Output is correct |
| 79 |
Correct |
190 ms |
2268 KB |
Output is correct |
| 80 |
Partially correct |
943 ms |
2824 KB |
Partially correct - number of queries: 7697 |
| 81 |
Partially correct |
931 ms |
2732 KB |
Partially correct - number of queries: 7549 |
| 82 |
Partially correct |
880 ms |
2728 KB |
Partially correct - number of queries: 7589 |
| 83 |
Correct |
2 ms |
680 KB |
Output is correct |
| 84 |
Partially correct |
629 ms |
2528 KB |
Partially correct - number of queries: 6467 |
| 85 |
Partially correct |
943 ms |
2804 KB |
Partially correct - number of queries: 7706 |
| 86 |
Correct |
11 ms |
1232 KB |
Output is correct |
| 87 |
Correct |
6 ms |
848 KB |
Output is correct |
| 88 |
Correct |
13 ms |
1232 KB |
Output is correct |
| 89 |
Correct |
10 ms |
1104 KB |
Output is correct |
| 90 |
Correct |
1 ms |
464 KB |
Output is correct |
| 91 |
Correct |
10 ms |
900 KB |
Output is correct |
| 92 |
Correct |
1 ms |
336 KB |
Output is correct |
| 93 |
Correct |
11 ms |
952 KB |
Output is correct |
| 94 |
Correct |
9 ms |
1232 KB |
Output is correct |
| 95 |
Correct |
11 ms |
1068 KB |
Output is correct |
| 96 |
Correct |
8 ms |
976 KB |
Output is correct |
| 97 |
Correct |
1 ms |
376 KB |
Output is correct |
