#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] == mx) return -1;
if(cur[0] + cur[1] != 0) return -2;
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;
int idx = solve(mid,e);
if(idx >= 0) return idx;
int cc = -1 - idx;
if(v2[0] - v1[0] == cc) return -1 - (v2[0] - v1[0]);
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 |
6 ms |
6904 KB |
Output is correct |
3 |
Correct |
13 ms |
6904 KB |
Output is correct |
4 |
Correct |
3 ms |
6904 KB |
Output is correct |
5 |
Correct |
6 ms |
6904 KB |
Output is correct |
6 |
Correct |
0 ms |
6904 KB |
Output is correct |
7 |
Correct |
3 ms |
6904 KB |
Output is correct |
8 |
Correct |
6 ms |
6904 KB |
Output is correct |
9 |
Correct |
0 ms |
6904 KB |
Output is correct |
10 |
Correct |
3 ms |
6904 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
6904 KB |
Output is correct |
2 |
Correct |
6 ms |
6904 KB |
Output is correct |
3 |
Correct |
0 ms |
6904 KB |
Output is correct |
4 |
Correct |
3 ms |
6904 KB |
Output is correct |
5 |
Correct |
0 ms |
6904 KB |
Output is correct |
6 |
Correct |
0 ms |
6904 KB |
Output is correct |
7 |
Correct |
0 ms |
6904 KB |
Output is correct |
8 |
Correct |
3 ms |
6904 KB |
Output is correct |
9 |
Correct |
3 ms |
6904 KB |
Output is correct |
10 |
Correct |
0 ms |
6904 KB |
Output is correct |
11 |
Correct |
6 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 |
59 ms |
7036 KB |
Output is correct |
16 |
Correct |
9 ms |
6904 KB |
Output is correct |
17 |
Partially correct |
59 ms |
7036 KB |
Partially correct - number of queries: 5092 |
18 |
Correct |
0 ms |
6904 KB |
Output is correct |
19 |
Correct |
19 ms |
7036 KB |
Output is correct |
20 |
Correct |
13 ms |
7036 KB |
Output is correct |
21 |
Correct |
23 ms |
7036 KB |
Output is correct |
22 |
Correct |
36 ms |
7036 KB |
Output is correct |
23 |
Correct |
6 ms |
6904 KB |
Output is correct |
24 |
Correct |
6 ms |
6904 KB |
Output is correct |
25 |
Correct |
13 ms |
7036 KB |
Output is correct |
26 |
Correct |
26 ms |
7036 KB |
Output is correct |
27 |
Correct |
6 ms |
6904 KB |
Output is correct |
28 |
Correct |
6 ms |
6904 KB |
Output is correct |
29 |
Correct |
6 ms |
6904 KB |
Output is correct |
30 |
Correct |
0 ms |
6904 KB |
Output is correct |
31 |
Partially correct |
39 ms |
7036 KB |
Partially correct - number of queries: 5062 |
32 |
Correct |
9 ms |
6904 KB |
Output is correct |
33 |
Correct |
6 ms |
6904 KB |
Output is correct |
34 |
Correct |
29 ms |
7036 KB |
Output is correct |
35 |
Correct |
3 ms |
6904 KB |
Output is correct |
36 |
Correct |
23 ms |
7036 KB |
Output is correct |
37 |
Correct |
23 ms |
6904 KB |
Output is correct |
38 |
Correct |
9 ms |
6904 KB |
Output is correct |
39 |
Correct |
19 ms |
7036 KB |
Output is correct |
40 |
Correct |
3 ms |
6904 KB |
Output is correct |
41 |
Correct |
6 ms |
7036 KB |
Output is correct |
42 |
Correct |
33 ms |
7036 KB |
Output is correct |
43 |
Correct |
9 ms |
7036 KB |
Output is correct |
44 |
Correct |
19 ms |
7036 KB |
Output is correct |
45 |
Correct |
29 ms |
7036 KB |
Output is correct |
46 |
Partially correct |
39 ms |
7036 KB |
Partially correct - number of queries: 5090 |
47 |
Correct |
29 ms |
7036 KB |
Output is correct |
48 |
Correct |
9 ms |
7036 KB |
Output is correct |
49 |
Correct |
29 ms |
7036 KB |
Output is correct |
50 |
Correct |
6 ms |
6904 KB |
Output is correct |
51 |
Correct |
23 ms |
7036 KB |
Output is correct |
52 |
Partially correct |
29 ms |
7036 KB |
Partially correct - number of queries: 5089 |
53 |
Correct |
13 ms |
6904 KB |
Output is correct |
54 |
Correct |
33 ms |
7036 KB |
Output is correct |
55 |
Partially correct |
39 ms |
7036 KB |
Partially correct - number of queries: 5095 |
56 |
Correct |
6 ms |
6904 KB |
Output is correct |
57 |
Correct |
13 ms |
7036 KB |
Output is correct |
58 |
Correct |
16 ms |
7036 KB |
Output is correct |
59 |
Correct |
19 ms |
7036 KB |
Output is correct |
60 |
Correct |
19 ms |
7036 KB |
Output is correct |
61 |
Correct |
0 ms |
6904 KB |
Output is correct |
62 |
Correct |
0 ms |
6904 KB |
Output is correct |
63 |
Correct |
3 ms |
6904 KB |
Output is correct |
64 |
Correct |
13 ms |
6904 KB |
Output is correct |
65 |
Correct |
0 ms |
6904 KB |
Output is correct |
66 |
Correct |
3 ms |
6904 KB |
Output is correct |
67 |
Correct |
0 ms |
7036 KB |
Output is correct |
68 |
Correct |
16 ms |
6904 KB |
Output is correct |
69 |
Correct |
0 ms |
6904 KB |
Output is correct |
70 |
Correct |
13 ms |
6904 KB |
Output is correct |
71 |
Partially correct |
26 ms |
7036 KB |
Partially correct - number of queries: 5239 |
72 |
Correct |
3 ms |
6904 KB |
Output is correct |
73 |
Partially correct |
23 ms |
7036 KB |
Partially correct - number of queries: 5176 |
74 |
Partially correct |
39 ms |
7036 KB |
Partially correct - number of queries: 5203 |
75 |
Correct |
0 ms |
6904 KB |
Output is correct |
76 |
Correct |
19 ms |
7036 KB |
Output is correct |
77 |
Partially correct |
16 ms |
7036 KB |
Partially correct - number of queries: 5234 |
78 |
Correct |
0 ms |
6904 KB |
Output is correct |
79 |
Correct |
19 ms |
7036 KB |
Output is correct |
80 |
Partially correct |
39 ms |
7036 KB |
Partially correct - number of queries: 5235 |
81 |
Partially correct |
26 ms |
7036 KB |
Partially correct - number of queries: 5195 |
82 |
Partially correct |
73 ms |
7036 KB |
Partially correct - number of queries: 5141 |
83 |
Correct |
0 ms |
6904 KB |
Output is correct |
84 |
Correct |
46 ms |
7036 KB |
Output is correct |
85 |
Partially correct |
26 ms |
7036 KB |
Partially correct - number of queries: 5190 |
86 |
Correct |
9 ms |
6904 KB |
Output is correct |
87 |
Correct |
3 ms |
6904 KB |
Output is correct |
88 |
Correct |
3 ms |
6904 KB |
Output is correct |
89 |
Correct |
0 ms |
6904 KB |
Output is correct |
90 |
Correct |
0 ms |
6904 KB |
Output is correct |
91 |
Correct |
0 ms |
6904 KB |
Output is correct |
92 |
Correct |
3 ms |
6904 KB |
Output is correct |
93 |
Correct |
0 ms |
6904 KB |
Output is correct |
94 |
Correct |
6 ms |
6904 KB |
Output is correct |
95 |
Correct |
9 ms |
6904 KB |
Output is correct |
96 |
Correct |
0 ms |
6904 KB |
Output is correct |
97 |
Correct |
3 ms |
6904 KB |
Output is correct |