#include "prize.h"
#include <bits/stdc++.h>
#define pb push_back
#define all(a) a.begin(), a.end()
#define sz(a) (int)a.size()
#define x first
#define y second
#define debug(...) cout << "[" << #__VA_ARGS__ << ": " << __VA_ARGS__ << "]\n"
#define rd() abs((int)rng())
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int>pii;
const int maxn = 2e5 + 100;
const int mod = 1e9 + 7;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
/*vector<int> ask(int i)
{
cout << "? " << i << endl;
vector<int>a(2);
cin >> a[0] >> a[1];
return a;
}*/
int bl = 700;
int find_best(int n)
{
vector<int>a, b;
int mx = 0;
for(int i = 0; i < min(n, 500); i++)
{
a = ask(i);
if(a[0] + a[1] == 0)
return i;
mx = max(mx, a[0] + a[1]);
}
for(int i = 500; i < n; i += bl)
{
int j = min(i + bl - 1, n - 1);
int p = i;
a = ask(p);
while(a[0] + a[1] != mx)
{
if(a[0] + a[1] == 0)
return p;
p++;
if(p > j)
break;
a = ask(p);
}
b = ask(j);
while(b[0] + b[1] != mx)
{
if(b[0] + b[1] == 0)
return j;
j--;
if(j < p)
break;
b = ask(j);
}
if(p < j)
{
int between = b[0] - a[0];
if(between != 0)
{
int it = p + 1;
while(it < j && between > 0)
{
a = ask(it);
if(a[0] + a[1] != mx)
{
between--;
if(a[0] + a[1] == 0)
return it;
}
else
{
int l = it, r = j - 1;
while(l < r)
{
int mid = (l + r) / 2;
b = ask(mid);
if(b[0] + b[1] != mx)
r = mid;
else
{
if(b[0] > a[0])
r = mid - 1;
else
l = mid + 1;
}
}
it = l;
a = ask(it);
--between;
if(a[0] + a[1] == 0)
return it;
}
++it;
}
}
}
}
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:103:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
248 KB |
Output is correct |
| 2 |
Correct |
11 ms |
248 KB |
Output is correct |
| 3 |
Correct |
9 ms |
380 KB |
Output is correct |
| 4 |
Correct |
14 ms |
376 KB |
Output is correct |
| 5 |
Correct |
10 ms |
248 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
9 ms |
248 KB |
Output is correct |
| 8 |
Correct |
10 ms |
248 KB |
Output is correct |
| 9 |
Correct |
6 ms |
376 KB |
Output is correct |
| 10 |
Correct |
13 ms |
248 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
376 KB |
Output is correct |
| 2 |
Correct |
10 ms |
248 KB |
Output is correct |
| 3 |
Correct |
10 ms |
376 KB |
Output is correct |
| 4 |
Correct |
10 ms |
312 KB |
Output is correct |
| 5 |
Correct |
11 ms |
248 KB |
Output is correct |
| 6 |
Correct |
2 ms |
396 KB |
Output is correct |
| 7 |
Correct |
6 ms |
376 KB |
Output is correct |
| 8 |
Correct |
6 ms |
376 KB |
Output is correct |
| 9 |
Correct |
6 ms |
376 KB |
Output is correct |
| 10 |
Correct |
7 ms |
396 KB |
Output is correct |
| 11 |
Correct |
6 ms |
504 KB |
Output is correct |
| 12 |
Correct |
9 ms |
248 KB |
Output is correct |
| 13 |
Correct |
14 ms |
316 KB |
Output is correct |
| 14 |
Correct |
9 ms |
248 KB |
Output is correct |
| 15 |
Correct |
14 ms |
248 KB |
Output is correct |
| 16 |
Partially correct |
54 ms |
376 KB |
Partially correct - number of queries: 5142 |
| 17 |
Correct |
6 ms |
248 KB |
Output is correct |
| 18 |
Partially correct |
56 ms |
248 KB |
Partially correct - number of queries: 6103 |
| 19 |
Correct |
4 ms |
376 KB |
Output is correct |
| 20 |
Correct |
22 ms |
376 KB |
Output is correct |
| 21 |
Correct |
30 ms |
248 KB |
Output is correct |
| 22 |
Correct |
12 ms |
320 KB |
Output is correct |
| 23 |
Correct |
8 ms |
376 KB |
Output is correct |
| 24 |
Correct |
8 ms |
248 KB |
Output is correct |
| 25 |
Correct |
19 ms |
312 KB |
Output is correct |
| 26 |
Correct |
26 ms |
248 KB |
Output is correct |
| 27 |
Correct |
7 ms |
248 KB |
Output is correct |
| 28 |
Partially correct |
65 ms |
312 KB |
Partially correct - number of queries: 5677 |
| 29 |
Correct |
49 ms |
248 KB |
Output is correct |
| 30 |
Partially correct |
51 ms |
316 KB |
Partially correct - number of queries: 6073 |
| 31 |
Correct |
4 ms |
376 KB |
Output is correct |
| 32 |
Correct |
15 ms |
376 KB |
Output is correct |
| 33 |
Correct |
2 ms |
248 KB |
Output is correct |
| 34 |
Correct |
23 ms |
376 KB |
Output is correct |
| 35 |
Correct |
11 ms |
376 KB |
Output is correct |
| 36 |
Correct |
20 ms |
376 KB |
Output is correct |
| 37 |
Correct |
8 ms |
248 KB |
Output is correct |
| 38 |
Correct |
8 ms |
376 KB |
Output is correct |
| 39 |
Correct |
31 ms |
276 KB |
Output is correct |
| 40 |
Partially correct |
50 ms |
248 KB |
Partially correct - number of queries: 5391 |
| 41 |
Correct |
37 ms |
248 KB |
Output is correct |
| 42 |
Correct |
43 ms |
248 KB |
Output is correct |
| 43 |
Correct |
20 ms |
248 KB |
Output is correct |
| 44 |
Correct |
26 ms |
376 KB |
Output is correct |
| 45 |
Correct |
13 ms |
380 KB |
Output is correct |
| 46 |
Correct |
7 ms |
248 KB |
Output is correct |
| 47 |
Correct |
16 ms |
376 KB |
Output is correct |
| 48 |
Correct |
28 ms |
248 KB |
Output is correct |
| 49 |
Correct |
12 ms |
248 KB |
Output is correct |
| 50 |
Partially correct |
58 ms |
376 KB |
Partially correct - number of queries: 6103 |
| 51 |
Correct |
30 ms |
376 KB |
Output is correct |
| 52 |
Correct |
7 ms |
316 KB |
Output is correct |
| 53 |
Correct |
13 ms |
320 KB |
Output is correct |
| 54 |
Correct |
28 ms |
248 KB |
Output is correct |
| 55 |
Correct |
4 ms |
312 KB |
Output is correct |
| 56 |
Partially correct |
62 ms |
248 KB |
Partially correct - number of queries: 6120 |
| 57 |
Correct |
32 ms |
376 KB |
Output is correct |
| 58 |
Correct |
50 ms |
248 KB |
Output is correct |
| 59 |
Correct |
32 ms |
504 KB |
Output is correct |
| 60 |
Correct |
37 ms |
248 KB |
Output is correct |
| 61 |
Correct |
7 ms |
392 KB |
Output is correct |
| 62 |
Correct |
7 ms |
376 KB |
Output is correct |
| 63 |
Correct |
13 ms |
376 KB |
Output is correct |
| 64 |
Correct |
10 ms |
248 KB |
Output is correct |
| 65 |
Correct |
7 ms |
312 KB |
Output is correct |
| 66 |
Correct |
7 ms |
376 KB |
Output is correct |
| 67 |
Correct |
13 ms |
308 KB |
Output is correct |
| 68 |
Correct |
6 ms |
248 KB |
Output is correct |
| 69 |
Correct |
15 ms |
248 KB |
Output is correct |
| 70 |
Correct |
12 ms |
376 KB |
Output is correct |
| 71 |
Partially correct |
61 ms |
248 KB |
Partially correct - number of queries: 6075 |
| 72 |
Correct |
16 ms |
248 KB |
Output is correct |
| 73 |
Partially correct |
66 ms |
376 KB |
Partially correct - number of queries: 6005 |
| 74 |
Partially correct |
60 ms |
252 KB |
Partially correct - number of queries: 6035 |
| 75 |
Correct |
12 ms |
376 KB |
Output is correct |
| 76 |
Partially correct |
53 ms |
376 KB |
Partially correct - number of queries: 5355 |
| 77 |
Partially correct |
32 ms |
248 KB |
Partially correct - number of queries: 6067 |
| 78 |
Correct |
9 ms |
376 KB |
Output is correct |
| 79 |
Correct |
34 ms |
376 KB |
Output is correct |
| 80 |
Partially correct |
32 ms |
504 KB |
Partially correct - number of queries: 6069 |
| 81 |
Partially correct |
62 ms |
248 KB |
Partially correct - number of queries: 6069 |
| 82 |
Partially correct |
53 ms |
308 KB |
Partially correct - number of queries: 5988 |
| 83 |
Correct |
15 ms |
248 KB |
Output is correct |
| 84 |
Partially correct |
49 ms |
248 KB |
Partially correct - number of queries: 5148 |
| 85 |
Partially correct |
73 ms |
248 KB |
Partially correct - number of queries: 6028 |
| 86 |
Correct |
15 ms |
376 KB |
Output is correct |
| 87 |
Correct |
13 ms |
376 KB |
Output is correct |
| 88 |
Correct |
12 ms |
376 KB |
Output is correct |
| 89 |
Correct |
13 ms |
248 KB |
Output is correct |
| 90 |
Correct |
7 ms |
392 KB |
Output is correct |
| 91 |
Correct |
8 ms |
396 KB |
Output is correct |
| 92 |
Correct |
7 ms |
504 KB |
Output is correct |
| 93 |
Correct |
16 ms |
376 KB |
Output is correct |
| 94 |
Correct |
12 ms |
376 KB |
Output is correct |
| 95 |
Correct |
14 ms |
276 KB |
Output is correct |
| 96 |
Correct |
18 ms |
376 KB |
Output is correct |
| 97 |
Correct |
12 ms |
248 KB |
Output is correct |
