#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<set>
#include "prize.h"
using namespace std;
const int MAX_N=2e5+4;
int asked[MAX_N][2];
bool used[MAX_N];
set<int>kinds;
set<int>idx[MAX_N];
pair<int,int>query(int pos)
{
if(used[pos])return {asked[pos][0],asked[pos][1]};
used[pos]=1;
auto ve=ask(pos);
asked[pos][0]=ve[0];
asked[pos][1]=ve[1];
kinds.insert(ve[0]+ve[1]);
idx[ve[0]+ve[1]].insert(pos);
return {ve[0],ve[1]};
}
bool useless(int l,int r)
{
for(int x:kinds)
{
auto it1=idx[x].lower_bound(l);
auto it2=idx[x].upper_bound(r);
if(it1!=idx[x].begin() && it2!=idx[x].end())
{
it1--;
int pos1=(*it1);
int pos2=(*it2);
if(query(pos2).first-query(pos1).first==0)return 1;
}
}
return 0;
}
int ans=-1;
void rec(int l,int r)
{
if(l>r)return;
if(ans!=-1)return;
int mid=(l+r)/2;
auto cur=query(mid);
if(cur.first+cur.second==0){ans=mid;return;}
if(!useless(l,mid-1))rec(l,mid-1);
if(!useless(mid+1,r))rec(mid+1,r);
}
int find_best(int n)
{
int prevpos=-1;
int qq=480;
while(qq--)
{
prevpos++;
auto cur=query(prevpos);
int all=cur.first+cur.second;
if(all==0)return prevpos;
}
prevpos++;
rec(prevpos,n-1);
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 2 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 3 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 4 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 5 |
Correct |
8 ms |
9816 KB |
Output is correct |
| 6 |
Correct |
5 ms |
9816 KB |
Output is correct |
| 7 |
Correct |
7 ms |
9984 KB |
Output is correct |
| 8 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 9 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 10 |
Correct |
6 ms |
9816 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 2 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 3 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 4 |
Correct |
5 ms |
9816 KB |
Output is correct |
| 5 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 6 |
Correct |
4 ms |
9816 KB |
Output is correct |
| 7 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 8 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 9 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 10 |
Correct |
7 ms |
9920 KB |
Output is correct |
| 11 |
Correct |
8 ms |
10264 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 13 |
Correct |
11 ms |
10584 KB |
Output is correct |
| 14 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 15 |
Correct |
11 ms |
10072 KB |
Output is correct |
| 16 |
Correct |
29 ms |
11600 KB |
Output is correct |
| 17 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 18 |
Partially correct |
28 ms |
11668 KB |
Partially correct - number of queries: 5100 |
| 19 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 20 |
Correct |
10 ms |
10072 KB |
Output is correct |
| 21 |
Correct |
13 ms |
10584 KB |
Output is correct |
| 22 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 23 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 25 |
Correct |
21 ms |
10968 KB |
Output is correct |
| 26 |
Correct |
27 ms |
10832 KB |
Output is correct |
| 27 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 28 |
Correct |
30 ms |
11732 KB |
Output is correct |
| 29 |
Correct |
29 ms |
11352 KB |
Output is correct |
| 30 |
Partially correct |
27 ms |
11600 KB |
Partially correct - number of queries: 5066 |
| 31 |
Correct |
5 ms |
9816 KB |
Output is correct |
| 32 |
Correct |
9 ms |
10404 KB |
Output is correct |
| 33 |
Correct |
4 ms |
9816 KB |
Output is correct |
| 34 |
Correct |
13 ms |
10396 KB |
Output is correct |
| 35 |
Correct |
8 ms |
10072 KB |
Output is correct |
| 36 |
Correct |
10 ms |
10072 KB |
Output is correct |
| 37 |
Correct |
10 ms |
10072 KB |
Output is correct |
| 38 |
Correct |
7 ms |
10068 KB |
Output is correct |
| 39 |
Correct |
15 ms |
10576 KB |
Output is correct |
| 40 |
Correct |
37 ms |
11804 KB |
Output is correct |
| 41 |
Correct |
20 ms |
10832 KB |
Output is correct |
| 42 |
Correct |
22 ms |
10988 KB |
Output is correct |
| 43 |
Correct |
24 ms |
10832 KB |
Output is correct |
| 44 |
Correct |
12 ms |
10576 KB |
Output is correct |
| 45 |
Correct |
17 ms |
10312 KB |
Output is correct |
| 46 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 47 |
Correct |
17 ms |
10576 KB |
Output is correct |
| 48 |
Correct |
36 ms |
11344 KB |
Output is correct |
| 49 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 50 |
Partially correct |
29 ms |
11704 KB |
Partially correct - number of queries: 5078 |
| 51 |
Correct |
15 ms |
10584 KB |
Output is correct |
| 52 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 53 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 54 |
Correct |
17 ms |
10584 KB |
Output is correct |
| 55 |
Correct |
5 ms |
9816 KB |
Output is correct |
| 56 |
Partially correct |
31 ms |
11600 KB |
Partially correct - number of queries: 5127 |
| 57 |
Correct |
30 ms |
11296 KB |
Output is correct |
| 58 |
Correct |
20 ms |
11100 KB |
Output is correct |
| 59 |
Correct |
25 ms |
11088 KB |
Output is correct |
| 60 |
Correct |
21 ms |
10832 KB |
Output is correct |
| 61 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 62 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 63 |
Correct |
10 ms |
10072 KB |
Output is correct |
| 64 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 65 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 66 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 67 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 68 |
Correct |
8 ms |
9852 KB |
Output is correct |
| 69 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 70 |
Correct |
8 ms |
10072 KB |
Output is correct |
| 71 |
Partially correct |
35 ms |
11596 KB |
Partially correct - number of queries: 5239 |
| 72 |
Correct |
9 ms |
10584 KB |
Output is correct |
| 73 |
Partially correct |
43 ms |
11988 KB |
Partially correct - number of queries: 5176 |
| 74 |
Partially correct |
43 ms |
11788 KB |
Partially correct - number of queries: 5203 |
| 75 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 76 |
Correct |
38 ms |
11708 KB |
Output is correct |
| 77 |
Partially correct |
27 ms |
11860 KB |
Partially correct - number of queries: 5212 |
| 78 |
Correct |
9 ms |
10584 KB |
Output is correct |
| 79 |
Correct |
21 ms |
11648 KB |
Output is correct |
| 80 |
Partially correct |
25 ms |
11612 KB |
Partially correct - number of queries: 5201 |
| 81 |
Partially correct |
27 ms |
11740 KB |
Partially correct - number of queries: 5189 |
| 82 |
Partially correct |
33 ms |
11760 KB |
Partially correct - number of queries: 5133 |
| 83 |
Correct |
7 ms |
10072 KB |
Output is correct |
| 84 |
Correct |
33 ms |
12212 KB |
Output is correct |
| 85 |
Partially correct |
37 ms |
11940 KB |
Partially correct - number of queries: 5171 |
| 86 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 87 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 88 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 89 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 90 |
Correct |
6 ms |
9816 KB |
Output is correct |
| 91 |
Correct |
7 ms |
9816 KB |
Output is correct |
| 92 |
Correct |
9 ms |
9816 KB |
Output is correct |
| 93 |
Correct |
7 ms |
10328 KB |
Output is correct |
| 94 |
Correct |
7 ms |
10340 KB |
Output is correct |
| 95 |
Correct |
6 ms |
10328 KB |
Output is correct |
| 96 |
Correct |
8 ms |
10584 KB |
Output is correct |
| 97 |
Correct |
11 ms |
9816 KB |
Output is correct |
