#include<bits/stdc++.h>
using namespace std;
//#include "prize.h"
#include <vector>
int find_best(int n);
std::vector<int> ask(int i);
namespace solver{
map<int,pair<int,int> > mp;
int fin;
pair<int,int> query(int box){
if(box==-1){
return make_pair(0,-111);
}
if(mp.count(box))return mp[box];
auto z=ask(box);
if(z[0]==0&&z[1]==0){
fin=box;
}
return mp[box]=make_pair(z[0],z[1]);
}
int mx;
inline void dfs(int l,int r){
int ex=query(r-1).first-query(l-1).first;
int r_cn=query(r-1).first+query(r-1).second;
int l_cn=query(l-1).first+query(l-1).second;
mx=max(mx,r_cn);
mx=max(mx,l_cn);
while(r>l&&r_cn!=mx&&fin!=-1){
r--;
r_cn=query(r-1).first+query(r-1).second;
mx=max(mx,r_cn);
}
while(r>l&&l_cn!=mx&&fin!=-1){
l++;
l_cn=query(l-1).first+query(l-1).second;
mx=max(mx,l_cn);
}
if(r<=l)return;
if(fin!=-1)return;
if(r_cn==l_cn&&query(l-1).first==query(r-1).first)return;
if(query(r-1).first==0)return;
if(l+1==r)return;
if(fin!=-1)return;
dfs(l,(l+r)>>1);
if(fin!=-1)return;
dfs((l+r)>>1,r);
}
int find_best(int n) {
fin=-1;
dfs(0,n);
return fin;
}
}
int find_best(int n) {
return solver::find_best(n);
}
Compilation message
prize.cpp: In function 'void solver::dfs(int, int)':
prize.cpp:27:7: warning: unused variable 'ex' [-Wunused-variable]
int ex=query(r-1).first-query(l-1).first;
^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
388 KB |
Output is correct |
| 2 |
Correct |
2 ms |
480 KB |
Output is correct |
| 3 |
Correct |
3 ms |
516 KB |
Output is correct |
| 4 |
Correct |
4 ms |
516 KB |
Output is correct |
| 5 |
Correct |
3 ms |
516 KB |
Output is correct |
| 6 |
Correct |
2 ms |
516 KB |
Output is correct |
| 7 |
Correct |
3 ms |
516 KB |
Output is correct |
| 8 |
Correct |
3 ms |
516 KB |
Output is correct |
| 9 |
Correct |
2 ms |
520 KB |
Output is correct |
| 10 |
Correct |
2 ms |
556 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
556 KB |
Output is correct |
| 2 |
Correct |
3 ms |
556 KB |
Output is correct |
| 3 |
Correct |
3 ms |
556 KB |
Output is correct |
| 4 |
Correct |
2 ms |
556 KB |
Output is correct |
| 5 |
Correct |
2 ms |
556 KB |
Output is correct |
| 6 |
Correct |
3 ms |
556 KB |
Output is correct |
| 7 |
Correct |
3 ms |
556 KB |
Output is correct |
| 8 |
Correct |
3 ms |
556 KB |
Output is correct |
| 9 |
Correct |
2 ms |
556 KB |
Output is correct |
| 10 |
Correct |
2 ms |
556 KB |
Output is correct |
| 11 |
Correct |
5 ms |
568 KB |
Output is correct |
| 12 |
Correct |
2 ms |
568 KB |
Output is correct |
| 13 |
Correct |
10 ms |
568 KB |
Output is correct |
| 14 |
Correct |
3 ms |
568 KB |
Output is correct |
| 15 |
Correct |
9 ms |
576 KB |
Output is correct |
| 16 |
Correct |
44 ms |
816 KB |
Output is correct |
| 17 |
Correct |
2 ms |
816 KB |
Output is correct |
| 18 |
Partially correct |
54 ms |
828 KB |
Partially correct - number of queries: 5056 |
| 19 |
Correct |
2 ms |
828 KB |
Output is correct |
| 20 |
Correct |
16 ms |
828 KB |
Output is correct |
| 21 |
Correct |
13 ms |
828 KB |
Output is correct |
| 22 |
Correct |
6 ms |
828 KB |
Output is correct |
| 23 |
Correct |
3 ms |
828 KB |
Output is correct |
| 24 |
Correct |
3 ms |
828 KB |
Output is correct |
| 25 |
Correct |
37 ms |
828 KB |
Output is correct |
| 26 |
Correct |
39 ms |
828 KB |
Output is correct |
| 27 |
Correct |
3 ms |
828 KB |
Output is correct |
| 28 |
Correct |
49 ms |
828 KB |
Output is correct |
| 29 |
Correct |
40 ms |
828 KB |
Output is correct |
| 30 |
Correct |
32 ms |
884 KB |
Output is correct |
| 31 |
Correct |
3 ms |
884 KB |
Output is correct |
| 32 |
Correct |
6 ms |
884 KB |
Output is correct |
| 33 |
Correct |
2 ms |
884 KB |
Output is correct |
| 34 |
Correct |
11 ms |
884 KB |
Output is correct |
| 35 |
Correct |
4 ms |
884 KB |
Output is correct |
| 36 |
Correct |
14 ms |
884 KB |
Output is correct |
| 37 |
Correct |
5 ms |
884 KB |
Output is correct |
| 38 |
Correct |
4 ms |
884 KB |
Output is correct |
| 39 |
Correct |
29 ms |
884 KB |
Output is correct |
| 40 |
Correct |
51 ms |
928 KB |
Output is correct |
| 41 |
Correct |
27 ms |
928 KB |
Output is correct |
| 42 |
Correct |
32 ms |
928 KB |
Output is correct |
| 43 |
Correct |
27 ms |
928 KB |
Output is correct |
| 44 |
Correct |
12 ms |
928 KB |
Output is correct |
| 45 |
Correct |
14 ms |
928 KB |
Output is correct |
| 46 |
Correct |
2 ms |
928 KB |
Output is correct |
| 47 |
Correct |
23 ms |
928 KB |
Output is correct |
| 48 |
Correct |
52 ms |
928 KB |
Output is correct |
| 49 |
Correct |
7 ms |
928 KB |
Output is correct |
| 50 |
Partially correct |
55 ms |
928 KB |
Partially correct - number of queries: 5007 |
| 51 |
Correct |
28 ms |
928 KB |
Output is correct |
| 52 |
Correct |
2 ms |
928 KB |
Output is correct |
| 53 |
Correct |
3 ms |
928 KB |
Output is correct |
| 54 |
Correct |
23 ms |
928 KB |
Output is correct |
| 55 |
Correct |
2 ms |
928 KB |
Output is correct |
| 56 |
Partially correct |
30 ms |
928 KB |
Partially correct - number of queries: 5034 |
| 57 |
Correct |
25 ms |
928 KB |
Output is correct |
| 58 |
Correct |
33 ms |
928 KB |
Output is correct |
| 59 |
Correct |
20 ms |
928 KB |
Output is correct |
| 60 |
Correct |
37 ms |
928 KB |
Output is correct |
| 61 |
Correct |
4 ms |
928 KB |
Output is correct |
| 62 |
Correct |
2 ms |
928 KB |
Output is correct |
| 63 |
Correct |
6 ms |
928 KB |
Output is correct |
| 64 |
Correct |
3 ms |
928 KB |
Output is correct |
| 65 |
Correct |
4 ms |
928 KB |
Output is correct |
| 66 |
Correct |
2 ms |
928 KB |
Output is correct |
| 67 |
Correct |
2 ms |
928 KB |
Output is correct |
| 68 |
Correct |
3 ms |
928 KB |
Output is correct |
| 69 |
Correct |
4 ms |
928 KB |
Output is correct |
| 70 |
Correct |
3 ms |
928 KB |
Output is correct |
| 71 |
Correct |
53 ms |
928 KB |
Output is correct |
| 72 |
Correct |
8 ms |
928 KB |
Output is correct |
| 73 |
Correct |
46 ms |
928 KB |
Output is correct |
| 74 |
Correct |
46 ms |
928 KB |
Output is correct |
| 75 |
Correct |
3 ms |
928 KB |
Output is correct |
| 76 |
Correct |
28 ms |
928 KB |
Output is correct |
| 77 |
Partially correct |
50 ms |
968 KB |
Partially correct - number of queries: 5177 |
| 78 |
Correct |
6 ms |
968 KB |
Output is correct |
| 79 |
Correct |
29 ms |
968 KB |
Output is correct |
| 80 |
Partially correct |
51 ms |
968 KB |
Partially correct - number of queries: 5233 |
| 81 |
Partially correct |
47 ms |
968 KB |
Partially correct - number of queries: 5216 |
| 82 |
Partially correct |
35 ms |
968 KB |
Partially correct - number of queries: 5125 |
| 83 |
Correct |
6 ms |
968 KB |
Output is correct |
| 84 |
Correct |
39 ms |
968 KB |
Output is correct |
| 85 |
Partially correct |
30 ms |
968 KB |
Partially correct - number of queries: 5180 |
| 86 |
Correct |
7 ms |
968 KB |
Output is correct |
| 87 |
Correct |
3 ms |
968 KB |
Output is correct |
| 88 |
Correct |
9 ms |
968 KB |
Output is correct |
| 89 |
Correct |
7 ms |
968 KB |
Output is correct |
| 90 |
Correct |
3 ms |
968 KB |
Output is correct |
| 91 |
Correct |
6 ms |
968 KB |
Output is correct |
| 92 |
Correct |
2 ms |
968 KB |
Output is correct |
| 93 |
Correct |
7 ms |
968 KB |
Output is correct |
| 94 |
Correct |
4 ms |
968 KB |
Output is correct |
| 95 |
Correct |
5 ms |
968 KB |
Output is correct |
| 96 |
Correct |
5 ms |
968 KB |
Output is correct |
| 97 |
Correct |
2 ms |
968 KB |
Output is correct |
