#include <cassert>
#include <iostream>
#include <vector>
using namespace std;
const int N = 2e5 + 2;
vector<int> cache[N];
vector<int> lv(1, 1);
int sumUpper = 0;
vector<int> ask(int i);
int countQuery = 0;
vector<int> Ask(int i)
{
assert(++countQuery <= 10000);
return ask(i);
}
inline bool Type(int i) { return cache[i][0] + cache[i][1] == sumUpper; }
int Solve(int l, int r, int cntL, int cntR)
{
int cur = sumUpper - cntL - cntR;
if (l > r || cur == 0) return -1;
int i = (l + r) / 2;
while (true)
{
if (cache[i].empty()) cache[i] = Ask(i);
if (cache[i][0] + cache[i][1] == 0) return i;
if (Type(i))
return max(Solve(l, i - 1, cntL, cache[i][1]), Solve(i + 1, r, cache[i][0], cntR));
if (i == r) return Solve(l, (l + r) / 2 - 1, cntL, cntR + r - (l + r) / 2 + 1);
++i;
}
return -1;
}
int find_best(int n)
{
for (int i = 1, sum = 1; ; ++i)
{
int nex = lv.back() * lv.back() + 1;
if (sum + nex <= n && sum + (long long) nex * nex + 1 <= n)
lv.push_back(nex);
else break;
}
int upp = 1;
for (int i = 0; i < (int) lv.size(); ++i)
upp += lv[i];
for (int i = 0; i < n; ++i)
if ((i + 1) % (n / upp) == 0)
{
cache[i] = Ask(i);
sumUpper = max(sumUpper, cache[i][0] + cache[i][1]);
}
int last = -1, sumL = 0;
for (int i = 0, need = 0; i < n; ++i)
{
if (!cache[i].empty() && cache[i][0] + cache[i][1] == 0) return i;
need += (i + 1) % (n / upp) == 0;
need -= !cache[i].empty() && Type(i);
if (need && cache[i].empty())
{
cache[i] = Ask(i);
--need;
}
if (!cache[i].empty() && Type(i))
{
int solved = Solve(last + 1, i - 1, sumL, cache[i][1]);
if (solved != -1) return solved;
last = i;
sumL = cache[i][0];
}
}
return Solve(last + 1, n - 1, sumL, 0);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
8 ms |
4984 KB |
Output is correct |
2 |
Correct |
9 ms |
5172 KB |
Output is correct |
3 |
Correct |
7 ms |
5172 KB |
Output is correct |
4 |
Correct |
8 ms |
5172 KB |
Output is correct |
5 |
Correct |
7 ms |
5172 KB |
Output is correct |
6 |
Correct |
8 ms |
5236 KB |
Output is correct |
7 |
Correct |
8 ms |
5236 KB |
Output is correct |
8 |
Correct |
10 ms |
5260 KB |
Output is correct |
9 |
Correct |
8 ms |
5260 KB |
Output is correct |
10 |
Correct |
7 ms |
5260 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
5260 KB |
Output is correct |
2 |
Correct |
8 ms |
5260 KB |
Output is correct |
3 |
Correct |
10 ms |
5260 KB |
Output is correct |
4 |
Correct |
9 ms |
5260 KB |
Output is correct |
5 |
Correct |
7 ms |
5260 KB |
Output is correct |
6 |
Correct |
7 ms |
5260 KB |
Output is correct |
7 |
Correct |
7 ms |
5260 KB |
Output is correct |
8 |
Correct |
9 ms |
5264 KB |
Output is correct |
9 |
Correct |
8 ms |
5264 KB |
Output is correct |
10 |
Correct |
7 ms |
5264 KB |
Output is correct |
11 |
Correct |
8 ms |
5268 KB |
Output is correct |
12 |
Correct |
7 ms |
5268 KB |
Output is correct |
13 |
Correct |
11 ms |
5268 KB |
Output is correct |
14 |
Correct |
7 ms |
5268 KB |
Output is correct |
15 |
Correct |
12 ms |
5268 KB |
Output is correct |
16 |
Correct |
41 ms |
5308 KB |
Output is correct |
17 |
Correct |
8 ms |
5308 KB |
Output is correct |
18 |
Correct |
26 ms |
5456 KB |
Output is correct |
19 |
Correct |
7 ms |
5456 KB |
Output is correct |
20 |
Correct |
16 ms |
5456 KB |
Output is correct |
21 |
Correct |
16 ms |
5456 KB |
Output is correct |
22 |
Correct |
11 ms |
5456 KB |
Output is correct |
23 |
Correct |
8 ms |
5456 KB |
Output is correct |
24 |
Correct |
7 ms |
5456 KB |
Output is correct |
25 |
Correct |
25 ms |
5456 KB |
Output is correct |
26 |
Correct |
20 ms |
5456 KB |
Output is correct |
27 |
Correct |
7 ms |
5456 KB |
Output is correct |
28 |
Correct |
43 ms |
5456 KB |
Output is correct |
29 |
Correct |
19 ms |
5456 KB |
Output is correct |
30 |
Correct |
41 ms |
5456 KB |
Output is correct |
31 |
Correct |
8 ms |
5456 KB |
Output is correct |
32 |
Correct |
10 ms |
5456 KB |
Output is correct |
33 |
Correct |
5 ms |
5456 KB |
Output is correct |
34 |
Correct |
16 ms |
5456 KB |
Output is correct |
35 |
Correct |
9 ms |
5456 KB |
Output is correct |
36 |
Correct |
13 ms |
5456 KB |
Output is correct |
37 |
Correct |
7 ms |
5456 KB |
Output is correct |
38 |
Correct |
7 ms |
5456 KB |
Output is correct |
39 |
Correct |
26 ms |
5456 KB |
Output is correct |
40 |
Correct |
35 ms |
5456 KB |
Output is correct |
41 |
Correct |
28 ms |
5456 KB |
Output is correct |
42 |
Correct |
25 ms |
5456 KB |
Output is correct |
43 |
Correct |
29 ms |
5456 KB |
Output is correct |
44 |
Correct |
22 ms |
5456 KB |
Output is correct |
45 |
Correct |
15 ms |
5456 KB |
Output is correct |
46 |
Correct |
7 ms |
5456 KB |
Output is correct |
47 |
Correct |
28 ms |
5456 KB |
Output is correct |
48 |
Correct |
38 ms |
5456 KB |
Output is correct |
49 |
Correct |
9 ms |
5456 KB |
Output is correct |
50 |
Correct |
39 ms |
5456 KB |
Output is correct |
51 |
Correct |
23 ms |
5456 KB |
Output is correct |
52 |
Correct |
8 ms |
5456 KB |
Output is correct |
53 |
Correct |
9 ms |
5456 KB |
Output is correct |
54 |
Correct |
16 ms |
5456 KB |
Output is correct |
55 |
Correct |
7 ms |
5456 KB |
Output is correct |
56 |
Correct |
44 ms |
5456 KB |
Output is correct |
57 |
Correct |
39 ms |
5456 KB |
Output is correct |
58 |
Correct |
33 ms |
5456 KB |
Output is correct |
59 |
Correct |
27 ms |
5456 KB |
Output is correct |
60 |
Correct |
28 ms |
5456 KB |
Output is correct |
61 |
Correct |
9 ms |
5456 KB |
Output is correct |
62 |
Correct |
9 ms |
5456 KB |
Output is correct |
63 |
Correct |
9 ms |
5456 KB |
Output is correct |
64 |
Correct |
8 ms |
5456 KB |
Output is correct |
65 |
Correct |
9 ms |
5456 KB |
Output is correct |
66 |
Correct |
11 ms |
5456 KB |
Output is correct |
67 |
Correct |
11 ms |
5456 KB |
Output is correct |
68 |
Correct |
8 ms |
5456 KB |
Output is correct |
69 |
Correct |
9 ms |
5456 KB |
Output is correct |
70 |
Correct |
10 ms |
5456 KB |
Output is correct |
71 |
Correct |
41 ms |
5456 KB |
Output is correct |
72 |
Correct |
10 ms |
5456 KB |
Output is correct |
73 |
Correct |
38 ms |
5456 KB |
Output is correct |
74 |
Correct |
50 ms |
5456 KB |
Output is correct |
75 |
Correct |
9 ms |
5456 KB |
Output is correct |
76 |
Correct |
42 ms |
5456 KB |
Output is correct |
77 |
Correct |
44 ms |
5456 KB |
Output is correct |
78 |
Correct |
11 ms |
5456 KB |
Output is correct |
79 |
Correct |
23 ms |
5456 KB |
Output is correct |
80 |
Correct |
38 ms |
5456 KB |
Output is correct |
81 |
Correct |
45 ms |
5456 KB |
Output is correct |
82 |
Correct |
45 ms |
5456 KB |
Output is correct |
83 |
Correct |
8 ms |
5456 KB |
Output is correct |
84 |
Correct |
35 ms |
5456 KB |
Output is correct |
85 |
Correct |
45 ms |
5468 KB |
Output is correct |
86 |
Runtime error |
121 ms |
10708 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
87 |
Halted |
0 ms |
0 KB |
- |