// 8.55 + 25min
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF (1 << 30)
#define MOD (1000 * 1000 * 1000 + 7)
#define maxn 201111
#define SQRT 450
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
int max_val;
int ans;
bool used[maxn];
vector<int> v[maxn];
vector<int> ASK(int x){
if(!used[x]){
v[x] = ask(x);
used[x] = 1;
}
return v[x];
}
void solve(int L, int D){
if(ans != -1 || L > D)
return;
int l = -1, d = -1;
vector<int> left, right;
for(int i = L; i <= D; i++){
left = ASK(i);
if(left[0] + left[1] == 0){
ans = i;
return;
}
if(left[0] + left[1] == max_val){
l = i;
break;
}
}
if(l == -1)
return;
for(int i = D; i > l; i--){
right = ASK(i);
if(right[0] + right[1] == 0){
ans = i;
return;
}
if(right[0] + right[1] == max_val){
d = i;
break;
}
}
if(d == -1)
return;
int num = left[1] - right[1];
if(num == 0)
return;
int mid = (l + d) / 2;
solve(l, mid);
solve(mid + 1, d);
}
int find_best(int n){
max_val = -1;
for(int i = 0; i < min(2 * SQRT, n); i++){
vector<int> ret = ASK(i);
max_val = max(max_val, ret[0] + ret[1]);
}
ans = -1;
for(int i = 0; i < SQRT; i++){
int l = i * SQRT;
solve(l, min(n - 1, l + SQRT - 1));
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
14 ms |
5136 KB |
Output is correct |
| 2 |
Correct |
14 ms |
5260 KB |
Output is correct |
| 3 |
Correct |
27 ms |
5260 KB |
Output is correct |
| 4 |
Correct |
17 ms |
5328 KB |
Output is correct |
| 5 |
Correct |
24 ms |
5348 KB |
Output is correct |
| 6 |
Correct |
20 ms |
5348 KB |
Output is correct |
| 7 |
Correct |
26 ms |
5348 KB |
Output is correct |
| 8 |
Correct |
26 ms |
5348 KB |
Output is correct |
| 9 |
Correct |
24 ms |
5488 KB |
Output is correct |
| 10 |
Correct |
26 ms |
5488 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
5488 KB |
Output is correct |
| 2 |
Correct |
27 ms |
5488 KB |
Output is correct |
| 3 |
Correct |
25 ms |
5488 KB |
Output is correct |
| 4 |
Correct |
27 ms |
5488 KB |
Output is correct |
| 5 |
Correct |
23 ms |
5488 KB |
Output is correct |
| 6 |
Correct |
19 ms |
5488 KB |
Output is correct |
| 7 |
Correct |
25 ms |
5488 KB |
Output is correct |
| 8 |
Correct |
22 ms |
5488 KB |
Output is correct |
| 9 |
Correct |
24 ms |
5488 KB |
Output is correct |
| 10 |
Correct |
26 ms |
5488 KB |
Output is correct |
| 11 |
Correct |
26 ms |
5488 KB |
Output is correct |
| 12 |
Correct |
22 ms |
5488 KB |
Output is correct |
| 13 |
Correct |
36 ms |
5512 KB |
Output is correct |
| 14 |
Correct |
20 ms |
5512 KB |
Output is correct |
| 15 |
Correct |
40 ms |
5512 KB |
Output is correct |
| 16 |
Partially correct |
96 ms |
5564 KB |
Partially correct - number of queries: 7082 |
| 17 |
Correct |
14 ms |
5564 KB |
Output is correct |
| 18 |
Partially correct |
113 ms |
5692 KB |
Partially correct - number of queries: 8339 |
| 19 |
Correct |
17 ms |
5692 KB |
Output is correct |
| 20 |
Correct |
32 ms |
5692 KB |
Output is correct |
| 21 |
Correct |
43 ms |
5692 KB |
Output is correct |
| 22 |
Correct |
15 ms |
5692 KB |
Output is correct |
| 23 |
Correct |
16 ms |
5692 KB |
Output is correct |
| 24 |
Correct |
18 ms |
5692 KB |
Output is correct |
| 25 |
Correct |
51 ms |
5692 KB |
Output is correct |
| 26 |
Correct |
47 ms |
5692 KB |
Output is correct |
| 27 |
Correct |
20 ms |
5692 KB |
Output is correct |
| 28 |
Partially correct |
94 ms |
5728 KB |
Partially correct - number of queries: 7310 |
| 29 |
Partially correct |
100 ms |
5748 KB |
Partially correct - number of queries: 5882 |
| 30 |
Partially correct |
92 ms |
5896 KB |
Partially correct - number of queries: 8360 |
| 31 |
Correct |
13 ms |
5896 KB |
Output is correct |
| 32 |
Correct |
27 ms |
5896 KB |
Output is correct |
| 33 |
Correct |
8 ms |
5896 KB |
Output is correct |
| 34 |
Correct |
28 ms |
5896 KB |
Output is correct |
| 35 |
Correct |
19 ms |
5896 KB |
Output is correct |
| 36 |
Correct |
17 ms |
5896 KB |
Output is correct |
| 37 |
Correct |
20 ms |
5896 KB |
Output is correct |
| 38 |
Correct |
18 ms |
5896 KB |
Output is correct |
| 39 |
Correct |
26 ms |
5896 KB |
Output is correct |
| 40 |
Partially correct |
78 ms |
5896 KB |
Partially correct - number of queries: 7482 |
| 41 |
Partially correct |
60 ms |
5896 KB |
Partially correct - number of queries: 5092 |
| 42 |
Partially correct |
69 ms |
5896 KB |
Partially correct - number of queries: 5092 |
| 43 |
Correct |
76 ms |
5896 KB |
Output is correct |
| 44 |
Correct |
45 ms |
5896 KB |
Output is correct |
| 45 |
Correct |
34 ms |
5896 KB |
Output is correct |
| 46 |
Correct |
11 ms |
5896 KB |
Output is correct |
| 47 |
Correct |
46 ms |
5896 KB |
Output is correct |
| 48 |
Partially correct |
74 ms |
5896 KB |
Partially correct - number of queries: 6198 |
| 49 |
Correct |
18 ms |
5896 KB |
Output is correct |
| 50 |
Partially correct |
90 ms |
5896 KB |
Partially correct - number of queries: 8321 |
| 51 |
Correct |
56 ms |
5896 KB |
Output is correct |
| 52 |
Correct |
14 ms |
5896 KB |
Output is correct |
| 53 |
Correct |
26 ms |
5896 KB |
Output is correct |
| 54 |
Correct |
40 ms |
5896 KB |
Output is correct |
| 55 |
Correct |
22 ms |
5896 KB |
Output is correct |
| 56 |
Partially correct |
95 ms |
5896 KB |
Partially correct - number of queries: 8353 |
| 57 |
Partially correct |
61 ms |
5896 KB |
Partially correct - number of queries: 6115 |
| 58 |
Partially correct |
66 ms |
5896 KB |
Partially correct - number of queries: 6239 |
| 59 |
Partially correct |
29 ms |
5896 KB |
Partially correct - number of queries: 5092 |
| 60 |
Correct |
71 ms |
5896 KB |
Output is correct |
| 61 |
Correct |
24 ms |
5896 KB |
Output is correct |
| 62 |
Correct |
19 ms |
5896 KB |
Output is correct |
| 63 |
Correct |
26 ms |
5896 KB |
Output is correct |
| 64 |
Correct |
13 ms |
5896 KB |
Output is correct |
| 65 |
Correct |
15 ms |
5896 KB |
Output is correct |
| 66 |
Correct |
37 ms |
5896 KB |
Output is correct |
| 67 |
Correct |
31 ms |
5896 KB |
Output is correct |
| 68 |
Correct |
16 ms |
5896 KB |
Output is correct |
| 69 |
Correct |
17 ms |
5896 KB |
Output is correct |
| 70 |
Correct |
28 ms |
5896 KB |
Output is correct |
| 71 |
Partially correct |
112 ms |
5896 KB |
Partially correct - number of queries: 8806 |
| 72 |
Correct |
17 ms |
5896 KB |
Output is correct |
| 73 |
Partially correct |
54 ms |
5896 KB |
Partially correct - number of queries: 8715 |
| 74 |
Partially correct |
112 ms |
5896 KB |
Partially correct - number of queries: 8754 |
| 75 |
Correct |
28 ms |
5896 KB |
Output is correct |
| 76 |
Partially correct |
62 ms |
5896 KB |
Partially correct - number of queries: 7784 |
| 77 |
Partially correct |
51 ms |
5896 KB |
Partially correct - number of queries: 7974 |
| 78 |
Correct |
33 ms |
5896 KB |
Output is correct |
| 79 |
Correct |
57 ms |
5896 KB |
Output is correct |
| 80 |
Partially correct |
76 ms |
5896 KB |
Partially correct - number of queries: 8033 |
| 81 |
Partially correct |
65 ms |
5896 KB |
Partially correct - number of queries: 7990 |
| 82 |
Partially correct |
70 ms |
5896 KB |
Partially correct - number of queries: 7992 |
| 83 |
Correct |
26 ms |
5896 KB |
Output is correct |
| 84 |
Partially correct |
76 ms |
5896 KB |
Partially correct - number of queries: 6896 |
| 85 |
Partially correct |
96 ms |
5896 KB |
Partially correct - number of queries: 7947 |
| 86 |
Correct |
18 ms |
5896 KB |
Output is correct |
| 87 |
Correct |
24 ms |
5896 KB |
Output is correct |
| 88 |
Correct |
26 ms |
5896 KB |
Output is correct |
| 89 |
Correct |
27 ms |
5896 KB |
Output is correct |
| 90 |
Correct |
19 ms |
5896 KB |
Output is correct |
| 91 |
Correct |
19 ms |
5896 KB |
Output is correct |
| 92 |
Correct |
16 ms |
5896 KB |
Output is correct |
| 93 |
Correct |
31 ms |
5896 KB |
Output is correct |
| 94 |
Correct |
24 ms |
5896 KB |
Output is correct |
| 95 |
Correct |
29 ms |
5896 KB |
Output is correct |
| 96 |
Correct |
29 ms |
5896 KB |
Output is correct |
| 97 |
Correct |
22 ms |
5896 KB |
Output is correct |
