#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
mt19937 rng((long long) (new char));
const int N = 200000 + 7;
vector<int> ret[N];
set<int> s[N];
set<int> sums;
int sol;
int pos;
vector<int> get(int i) {
if (ret[i].empty()) {
ret[i] = ask(i);
if (ret[i][0] == 0 && ret[i][1] == 0) {
sol = i;
}
}
sums.insert(ret[i][0] + ret[i][1]);
s[ret[i][0] + ret[i][1]].insert(i);
return ret[i];
}
int rep(int l, int r) {
if (l > r) {
return 0;
}
for (auto &x : sums) {
auto it = s[x].lower_bound(r);
if (it != s[x].end()) {
auto it2 = s[x].lower_bound(l + 1);
if (it2 != s[x].begin()) {
it2--;
int f = *it2;
int s = *it;
if (get(f)[0] == get(s)[0]) {
return 0;
}
}
}
}
int m = (l + r) / 2;
if (get(m)[0] == 0 && get(m)[1] == 0) {
return m;
}
if (rng() & 1) {
int x = rep(m + 1, r);
if (x == 0) {
x = rep(l, m - 1);
}
return x;
} else {
int x = rep(l, m - 1);
if (x == 0) {
x = rep(m + 1, r);
}
return x;
}
}
int find_best(int n) {
sol = -1;
vector<int> ord(n);
for (int i = 0; i < n; i++) {
ord[i] = i;
}
shuffle(ord.begin(), ord.end(), rng);
while ((int) ord.size() > 447) {
ord.pop_back();
}
for (auto &x : ord) {
get(x);
}
if (sol != -1) {
return sol;
}
return rep(0, n - 1);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
20 ms |
15232 KB |
Output is correct |
| 2 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 3 |
Correct |
20 ms |
15428 KB |
Output is correct |
| 4 |
Correct |
19 ms |
15292 KB |
Output is correct |
| 5 |
Correct |
23 ms |
15228 KB |
Output is correct |
| 6 |
Correct |
21 ms |
15224 KB |
Output is correct |
| 7 |
Correct |
22 ms |
15264 KB |
Output is correct |
| 8 |
Correct |
21 ms |
15180 KB |
Output is correct |
| 9 |
Correct |
21 ms |
15232 KB |
Output is correct |
| 10 |
Correct |
20 ms |
15232 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
21 ms |
15232 KB |
Output is correct |
| 2 |
Correct |
20 ms |
15232 KB |
Output is correct |
| 3 |
Correct |
21 ms |
15224 KB |
Output is correct |
| 4 |
Correct |
24 ms |
15224 KB |
Output is correct |
| 5 |
Correct |
20 ms |
15272 KB |
Output is correct |
| 6 |
Correct |
21 ms |
15224 KB |
Output is correct |
| 7 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 8 |
Correct |
24 ms |
15224 KB |
Output is correct |
| 9 |
Correct |
20 ms |
15296 KB |
Output is correct |
| 10 |
Correct |
20 ms |
15232 KB |
Output is correct |
| 11 |
Correct |
20 ms |
15312 KB |
Output is correct |
| 12 |
Correct |
22 ms |
15224 KB |
Output is correct |
| 13 |
Correct |
22 ms |
15224 KB |
Output is correct |
| 14 |
Correct |
18 ms |
14504 KB |
Output is correct |
| 15 |
Correct |
27 ms |
15224 KB |
Output is correct |
| 16 |
Correct |
32 ms |
15352 KB |
Output is correct |
| 17 |
Correct |
36 ms |
15352 KB |
Output is correct |
| 18 |
Correct |
45 ms |
15404 KB |
Output is correct |
| 19 |
Correct |
27 ms |
15272 KB |
Output is correct |
| 20 |
Correct |
26 ms |
14968 KB |
Output is correct |
| 21 |
Correct |
24 ms |
15360 KB |
Output is correct |
| 22 |
Correct |
39 ms |
15256 KB |
Output is correct |
| 23 |
Correct |
21 ms |
15308 KB |
Output is correct |
| 24 |
Correct |
23 ms |
15356 KB |
Output is correct |
| 25 |
Correct |
35 ms |
15428 KB |
Output is correct |
| 26 |
Correct |
45 ms |
15364 KB |
Output is correct |
| 27 |
Correct |
23 ms |
15220 KB |
Output is correct |
| 28 |
Correct |
34 ms |
15352 KB |
Output is correct |
| 29 |
Correct |
28 ms |
15352 KB |
Output is correct |
| 30 |
Correct |
35 ms |
15256 KB |
Output is correct |
| 31 |
Correct |
25 ms |
15356 KB |
Output is correct |
| 32 |
Correct |
28 ms |
15232 KB |
Output is correct |
| 33 |
Correct |
11 ms |
14472 KB |
Output is correct |
| 34 |
Correct |
38 ms |
15312 KB |
Output is correct |
| 35 |
Correct |
22 ms |
15444 KB |
Output is correct |
| 36 |
Correct |
39 ms |
15388 KB |
Output is correct |
| 37 |
Correct |
23 ms |
15224 KB |
Output is correct |
| 38 |
Correct |
21 ms |
15224 KB |
Output is correct |
| 39 |
Correct |
28 ms |
15352 KB |
Output is correct |
| 40 |
Correct |
34 ms |
15352 KB |
Output is correct |
| 41 |
Correct |
26 ms |
15232 KB |
Output is correct |
| 42 |
Correct |
25 ms |
15232 KB |
Output is correct |
| 43 |
Correct |
30 ms |
15352 KB |
Output is correct |
| 44 |
Correct |
24 ms |
15372 KB |
Output is correct |
| 45 |
Correct |
24 ms |
15224 KB |
Output is correct |
| 46 |
Correct |
23 ms |
15356 KB |
Output is correct |
| 47 |
Correct |
23 ms |
15352 KB |
Output is correct |
| 48 |
Correct |
31 ms |
15352 KB |
Output is correct |
| 49 |
Correct |
30 ms |
15352 KB |
Output is correct |
| 50 |
Correct |
39 ms |
15480 KB |
Output is correct |
| 51 |
Correct |
35 ms |
15352 KB |
Output is correct |
| 52 |
Correct |
31 ms |
15352 KB |
Output is correct |
| 53 |
Correct |
21 ms |
15424 KB |
Output is correct |
| 54 |
Correct |
25 ms |
15224 KB |
Output is correct |
| 55 |
Correct |
44 ms |
15352 KB |
Output is correct |
| 56 |
Correct |
22 ms |
15224 KB |
Output is correct |
| 57 |
Correct |
21 ms |
15440 KB |
Output is correct |
| 58 |
Correct |
33 ms |
15352 KB |
Output is correct |
| 59 |
Correct |
31 ms |
15352 KB |
Output is correct |
| 60 |
Correct |
32 ms |
15352 KB |
Output is correct |
| 61 |
Correct |
19 ms |
15280 KB |
Output is correct |
| 62 |
Correct |
20 ms |
15232 KB |
Output is correct |
| 63 |
Correct |
22 ms |
15224 KB |
Output is correct |
| 64 |
Correct |
24 ms |
15232 KB |
Output is correct |
| 65 |
Correct |
20 ms |
15224 KB |
Output is correct |
| 66 |
Correct |
22 ms |
15224 KB |
Output is correct |
| 67 |
Correct |
21 ms |
15224 KB |
Output is correct |
| 68 |
Correct |
20 ms |
15232 KB |
Output is correct |
| 69 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 70 |
Correct |
21 ms |
15232 KB |
Output is correct |
| 71 |
Correct |
53 ms |
15480 KB |
Output is correct |
| 72 |
Correct |
28 ms |
15232 KB |
Output is correct |
| 73 |
Correct |
57 ms |
15620 KB |
Output is correct |
| 74 |
Correct |
58 ms |
15480 KB |
Output is correct |
| 75 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 76 |
Correct |
49 ms |
15352 KB |
Output is correct |
| 77 |
Correct |
58 ms |
15356 KB |
Output is correct |
| 78 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 79 |
Correct |
35 ms |
15352 KB |
Output is correct |
| 80 |
Correct |
52 ms |
15352 KB |
Output is correct |
| 81 |
Correct |
54 ms |
15352 KB |
Output is correct |
| 82 |
Correct |
46 ms |
15480 KB |
Output is correct |
| 83 |
Correct |
21 ms |
15232 KB |
Output is correct |
| 84 |
Correct |
43 ms |
15352 KB |
Output is correct |
| 85 |
Correct |
43 ms |
15552 KB |
Output is correct |
| 86 |
Correct |
24 ms |
15232 KB |
Output is correct |
| 87 |
Correct |
24 ms |
15360 KB |
Output is correct |
| 88 |
Correct |
24 ms |
15232 KB |
Output is correct |
| 89 |
Correct |
24 ms |
15232 KB |
Output is correct |
| 90 |
Correct |
21 ms |
15232 KB |
Output is correct |
| 91 |
Correct |
22 ms |
15232 KB |
Output is correct |
| 92 |
Correct |
23 ms |
15232 KB |
Output is correct |
| 93 |
Correct |
27 ms |
15360 KB |
Output is correct |
| 94 |
Correct |
23 ms |
15296 KB |
Output is correct |
| 95 |
Correct |
31 ms |
15232 KB |
Output is correct |
| 96 |
Correct |
26 ms |
15232 KB |
Output is correct |
| 97 |
Correct |
22 ms |
15232 KB |
Output is correct |
