#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 200010;
bool asked[N];
vector<int> answer[N];
int mx = 0 ;
vector<int> get(int i){
if(asked[i])
return answer[i];
asked[i] = true;
return answer[i] = ask(i);
}
int solve(int s,int e){
if(s == e){
vector<int> cur = get(s);
if(cur[0] + cur[1] != 0) return -1;
return s;
}
vector<int> v1 = get(s);
if(v1[0] + v1[1] == 0) return s;
if(v1[0] + v1[1] != mx) return solve(s+1,e);
vector<int> v2 = get(e);
if(v2[0] + v2[1] == 0) return e;
if(v2[0] + v2[1] != mx) return solve(s,e-1);
if(v1[0] == v2[0]) return -1;
if(s == e - 1) return -1;
int mid = (s + e) / 2;
if(rand() % 2){
int idx = solve(s,mid);
if(idx != -1) return idx;
return solve(mid+1,e);
}
int idx = solve(mid+1,e);
if(idx != -1) return idx;
return solve(s,mid);
}
int find_best(int n) {
srand(time(0));
int num = min(n,480);
for(int i=0;i<num;i++){
vector<int> res = get(i);
int cur = res[0] + res[1];
mx = max(mx,cur);
}
return solve(0,n-1);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 2 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 3 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 4 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 5 |
Correct |
16 ms |
6904 KB |
Output is correct |
| 6 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 7 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 8 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 9 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 10 |
Correct |
0 ms |
6904 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
6904 KB |
Output is correct |
| 2 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 3 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 4 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 5 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 6 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 7 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 8 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 9 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 10 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 11 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 12 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 13 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 14 |
Correct |
13 ms |
6904 KB |
Output is correct |
| 15 |
Correct |
33 ms |
7036 KB |
Output is correct |
| 16 |
Correct |
16 ms |
7036 KB |
Output is correct |
| 17 |
Partially correct |
33 ms |
7168 KB |
Partially correct - number of queries: 6208 |
| 18 |
Partially correct |
23 ms |
7036 KB |
Partially correct - number of queries: 5276 |
| 19 |
Partially correct |
56 ms |
7168 KB |
Partially correct - number of queries: 7394 |
| 20 |
Correct |
9 ms |
7036 KB |
Output is correct |
| 21 |
Partially correct |
39 ms |
7168 KB |
Partially correct - number of queries: 5818 |
| 22 |
Correct |
6 ms |
7036 KB |
Output is correct |
| 23 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 24 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 25 |
Correct |
16 ms |
7036 KB |
Output is correct |
| 26 |
Correct |
23 ms |
7036 KB |
Output is correct |
| 27 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 28 |
Correct |
9 ms |
7036 KB |
Output is correct |
| 29 |
Correct |
19 ms |
7036 KB |
Output is correct |
| 30 |
Correct |
6 ms |
7036 KB |
Output is correct |
| 31 |
Partially correct |
13 ms |
7036 KB |
Partially correct - number of queries: 5765 |
| 32 |
Correct |
13 ms |
6904 KB |
Output is correct |
| 33 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 34 |
Correct |
16 ms |
7036 KB |
Output is correct |
| 35 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 36 |
Partially correct |
13 ms |
7036 KB |
Partially correct - number of queries: 5203 |
| 37 |
Correct |
19 ms |
6904 KB |
Output is correct |
| 38 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 39 |
Partially correct |
29 ms |
7168 KB |
Partially correct - number of queries: 6262 |
| 40 |
Correct |
6 ms |
7036 KB |
Output is correct |
| 41 |
Correct |
9 ms |
7036 KB |
Output is correct |
| 42 |
Correct |
16 ms |
7036 KB |
Output is correct |
| 43 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 44 |
Partially correct |
49 ms |
7168 KB |
Partially correct - number of queries: 6461 |
| 45 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 46 |
Correct |
39 ms |
7036 KB |
Output is correct |
| 47 |
Correct |
16 ms |
7036 KB |
Output is correct |
| 48 |
Correct |
19 ms |
7036 KB |
Output is correct |
| 49 |
Correct |
39 ms |
7036 KB |
Output is correct |
| 50 |
Correct |
23 ms |
7036 KB |
Output is correct |
| 51 |
Correct |
23 ms |
7036 KB |
Output is correct |
| 52 |
Partially correct |
33 ms |
7168 KB |
Partially correct - number of queries: 6219 |
| 53 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 54 |
Partially correct |
49 ms |
7168 KB |
Partially correct - number of queries: 6087 |
| 55 |
Correct |
6 ms |
7036 KB |
Output is correct |
| 56 |
Correct |
19 ms |
7036 KB |
Output is correct |
| 57 |
Partially correct |
29 ms |
7168 KB |
Partially correct - number of queries: 7671 |
| 58 |
Partially correct |
9 ms |
7168 KB |
Partially correct - number of queries: 7289 |
| 59 |
Correct |
29 ms |
7036 KB |
Output is correct |
| 60 |
Correct |
13 ms |
7036 KB |
Output is correct |
| 61 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 62 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 63 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 64 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 65 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 66 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 67 |
Correct |
9 ms |
7036 KB |
Output is correct |
| 68 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 69 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 70 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 71 |
Partially correct |
56 ms |
7168 KB |
Partially correct - number of queries: 8599 |
| 72 |
Correct |
13 ms |
6904 KB |
Output is correct |
| 73 |
Partially correct |
46 ms |
7168 KB |
Partially correct - number of queries: 8496 |
| 74 |
Partially correct |
89 ms |
7168 KB |
Partially correct - number of queries: 8536 |
| 75 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 76 |
Partially correct |
39 ms |
7168 KB |
Partially correct - number of queries: 7520 |
| 77 |
Partially correct |
79 ms |
7168 KB |
Partially correct - number of queries: 7717 |
| 78 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 79 |
Correct |
33 ms |
7036 KB |
Output is correct |
| 80 |
Partially correct |
43 ms |
7168 KB |
Partially correct - number of queries: 7759 |
| 81 |
Partially correct |
39 ms |
7168 KB |
Partially correct - number of queries: 7680 |
| 82 |
Partially correct |
83 ms |
7168 KB |
Partially correct - number of queries: 7271 |
| 83 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 84 |
Partially correct |
19 ms |
7168 KB |
Partially correct - number of queries: 6515 |
| 85 |
Partially correct |
26 ms |
7168 KB |
Partially correct - number of queries: 7528 |
| 86 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 87 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 88 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 89 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 90 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 91 |
Correct |
9 ms |
6904 KB |
Output is correct |
| 92 |
Correct |
6 ms |
6904 KB |
Output is correct |
| 93 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 94 |
Correct |
13 ms |
6904 KB |
Output is correct |
| 95 |
Correct |
0 ms |
6904 KB |
Output is correct |
| 96 |
Correct |
3 ms |
6904 KB |
Output is correct |
| 97 |
Correct |
6 ms |
6904 KB |
Output is correct |
