#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int B = 600;
const int maxn = 2e5+5;
vector<int> res[maxn];
vector<int> get(int x){
if(!res[x].empty()) return res[x];
res[x]=ask(x);res[x][1]+=res[x][0];
return res[x];
}
int N,bit[maxn],Max;
void update(int x){
for(int i=x+1;i<=N;i+=(i&(-i))) bit[i]++;
}
int query(int x){
int ans=0;
for(int i=x+1;i>=1;i-=(i&(-i))) ans+=bit[i];
return ans;
}
int find_best(int n){
N=n;
vector<int> ord(min(n,500));
iota(ord.begin(),ord.end(),0);
shuffle(ord.begin(),ord.end(),rng);
for(int i=0;i<500;i++){
vector<int> cc=get(i);
if(cc[1]==0) return i;
Max=max(Max,cc[1]);
}
for(int i=0;i<n;i+=B){
vector<int> p;
for(int j=i;j<min(i+B,n);j++) p.push_back(j);
int cnt=0;
while(!p.empty()){
int x=p.back();p.pop_back();
vector<int> cc=get(x);
if(cc[1]==0) return x;
if(cc[1]<Max) update(x);
else{
cnt=cc[0]-query(x);
break;
}
}
while(cnt){
int l=0,r=(int)p.size()-1;
bool check=false;
while(l<=r){
int mid=(l+r)>>1;
vector<int> cc=get(p[mid]);
if(cc[1]==0) return p[mid];
if(cc[1]<Max){
update(p[mid]);
p.erase(p.begin()+mid);
check=true;
break;
}
if(cc[0]-query(p[mid])) r=mid-1;
else l=mid+1;
}
cnt--;
}
}
return -1;
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:52:18: warning: variable 'check' set but not used [-Wunused-but-set-variable]
52 | bool check=false;
| ^~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
6012 KB |
Output is correct |
| 2 |
Correct |
7 ms |
5984 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6012 KB |
Output is correct |
| 4 |
Correct |
5 ms |
6028 KB |
Output is correct |
| 5 |
Correct |
7 ms |
6524 KB |
Output is correct |
| 6 |
Correct |
1 ms |
5720 KB |
Output is correct |
| 7 |
Correct |
4 ms |
5784 KB |
Output is correct |
| 8 |
Correct |
4 ms |
6012 KB |
Output is correct |
| 9 |
Correct |
5 ms |
6032 KB |
Output is correct |
| 10 |
Correct |
8 ms |
5756 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
6016 KB |
Output is correct |
| 2 |
Correct |
6 ms |
6260 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6284 KB |
Output is correct |
| 4 |
Correct |
5 ms |
5784 KB |
Output is correct |
| 5 |
Correct |
4 ms |
6012 KB |
Output is correct |
| 6 |
Correct |
1 ms |
5716 KB |
Output is correct |
| 7 |
Correct |
6 ms |
6024 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6268 KB |
Output is correct |
| 9 |
Correct |
4 ms |
6036 KB |
Output is correct |
| 10 |
Correct |
5 ms |
6036 KB |
Output is correct |
| 11 |
Correct |
6 ms |
5760 KB |
Output is correct |
| 12 |
Correct |
3 ms |
6020 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5756 KB |
Output is correct |
| 14 |
Correct |
4 ms |
6004 KB |
Output is correct |
| 15 |
Correct |
6 ms |
6160 KB |
Output is correct |
| 16 |
Correct |
22 ms |
6380 KB |
Output is correct |
| 17 |
Correct |
4 ms |
6016 KB |
Output is correct |
| 18 |
Correct |
29 ms |
6944 KB |
Output is correct |
| 19 |
Correct |
4 ms |
6016 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5892 KB |
Output is correct |
| 21 |
Correct |
9 ms |
6868 KB |
Output is correct |
| 22 |
Correct |
8 ms |
5988 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5764 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5760 KB |
Output is correct |
| 25 |
Correct |
13 ms |
6508 KB |
Output is correct |
| 26 |
Correct |
14 ms |
6304 KB |
Output is correct |
| 27 |
Correct |
5 ms |
6032 KB |
Output is correct |
| 28 |
Correct |
24 ms |
6540 KB |
Output is correct |
| 29 |
Correct |
16 ms |
6476 KB |
Output is correct |
| 30 |
Correct |
28 ms |
6968 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5756 KB |
Output is correct |
| 32 |
Correct |
6 ms |
6280 KB |
Output is correct |
| 33 |
Correct |
2 ms |
5720 KB |
Output is correct |
| 34 |
Correct |
9 ms |
6320 KB |
Output is correct |
| 35 |
Correct |
5 ms |
6028 KB |
Output is correct |
| 36 |
Correct |
8 ms |
6676 KB |
Output is correct |
| 37 |
Correct |
5 ms |
5804 KB |
Output is correct |
| 38 |
Correct |
4 ms |
6008 KB |
Output is correct |
| 39 |
Correct |
12 ms |
6220 KB |
Output is correct |
| 40 |
Correct |
23 ms |
7168 KB |
Output is correct |
| 41 |
Correct |
13 ms |
6052 KB |
Output is correct |
| 42 |
Correct |
13 ms |
6716 KB |
Output is correct |
| 43 |
Correct |
13 ms |
6428 KB |
Output is correct |
| 44 |
Correct |
10 ms |
6212 KB |
Output is correct |
| 45 |
Correct |
11 ms |
6312 KB |
Output is correct |
| 46 |
Correct |
3 ms |
6004 KB |
Output is correct |
| 47 |
Correct |
10 ms |
6484 KB |
Output is correct |
| 48 |
Correct |
16 ms |
6508 KB |
Output is correct |
| 49 |
Correct |
6 ms |
6564 KB |
Output is correct |
| 50 |
Correct |
29 ms |
6484 KB |
Output is correct |
| 51 |
Correct |
9 ms |
6680 KB |
Output is correct |
| 52 |
Correct |
4 ms |
6264 KB |
Output is correct |
| 53 |
Correct |
5 ms |
5776 KB |
Output is correct |
| 54 |
Correct |
12 ms |
6396 KB |
Output is correct |
| 55 |
Correct |
3 ms |
6016 KB |
Output is correct |
| 56 |
Correct |
25 ms |
6756 KB |
Output is correct |
| 57 |
Correct |
19 ms |
6900 KB |
Output is correct |
| 58 |
Correct |
16 ms |
6520 KB |
Output is correct |
| 59 |
Correct |
14 ms |
6300 KB |
Output is correct |
| 60 |
Correct |
15 ms |
6504 KB |
Output is correct |
| 61 |
Correct |
5 ms |
6288 KB |
Output is correct |
| 62 |
Correct |
4 ms |
6008 KB |
Output is correct |
| 63 |
Correct |
5 ms |
6024 KB |
Output is correct |
| 64 |
Correct |
5 ms |
6288 KB |
Output is correct |
| 65 |
Correct |
5 ms |
6052 KB |
Output is correct |
| 66 |
Correct |
6 ms |
6040 KB |
Output is correct |
| 67 |
Correct |
7 ms |
6288 KB |
Output is correct |
| 68 |
Correct |
4 ms |
6012 KB |
Output is correct |
| 69 |
Correct |
7 ms |
6284 KB |
Output is correct |
| 70 |
Correct |
7 ms |
6276 KB |
Output is correct |
| 71 |
Partially correct |
34 ms |
6272 KB |
Partially correct - number of queries: 5413 |
| 72 |
Correct |
6 ms |
6292 KB |
Output is correct |
| 73 |
Partially correct |
25 ms |
6796 KB |
Partially correct - number of queries: 5350 |
| 74 |
Partially correct |
29 ms |
6396 KB |
Partially correct - number of queries: 5377 |
| 75 |
Correct |
6 ms |
6044 KB |
Output is correct |
| 76 |
Correct |
20 ms |
6556 KB |
Output is correct |
| 77 |
Correct |
24 ms |
6344 KB |
Output is correct |
| 78 |
Correct |
7 ms |
6516 KB |
Output is correct |
| 79 |
Correct |
15 ms |
6768 KB |
Output is correct |
| 80 |
Correct |
26 ms |
6528 KB |
Output is correct |
| 81 |
Correct |
19 ms |
6520 KB |
Output is correct |
| 82 |
Correct |
24 ms |
6820 KB |
Output is correct |
| 83 |
Correct |
6 ms |
6008 KB |
Output is correct |
| 84 |
Correct |
18 ms |
6776 KB |
Output is correct |
| 85 |
Correct |
27 ms |
6600 KB |
Output is correct |
| 86 |
Correct |
6 ms |
6160 KB |
Output is correct |
| 87 |
Correct |
5 ms |
5756 KB |
Output is correct |
| 88 |
Correct |
6 ms |
6008 KB |
Output is correct |
| 89 |
Correct |
5 ms |
6260 KB |
Output is correct |
| 90 |
Correct |
5 ms |
6516 KB |
Output is correct |
| 91 |
Correct |
6 ms |
6004 KB |
Output is correct |
| 92 |
Correct |
5 ms |
6012 KB |
Output is correct |
| 93 |
Correct |
6 ms |
5856 KB |
Output is correct |
| 94 |
Correct |
6 ms |
6048 KB |
Output is correct |
| 95 |
Correct |
7 ms |
6828 KB |
Output is correct |
| 96 |
Correct |
7 ms |
6092 KB |
Output is correct |
| 97 |
Correct |
6 ms |
5800 KB |
Output is correct |
