/*
Idea:
- http://ioi2017.org/tasks/editorial/prize.pdf
*/
#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
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
map<int, pii> m[maxn];
int ans;
pii ASK(int x){
vector<int> v = ask(x);
return mp(v[0], v[1]);
}
void solve(int l, int d){
if(ans != -1 || l > d)
return;
int mid = (l + d) / 2;
pii cur = ASK(mid);
int sum = cur.fi + cur.se;
if(sum == 0){
ans = mid;
return;
}
auto it = m[sum].upper_bound(mid);
bool left = 1, right = 1;
if(it != m[sum].begin()){
it--;
if(cur.se == it -> se.se)
left = 0;
it++;
}
if(it != m[sum].end()){
if(cur.se == it -> se.se)
right = 0;
}
m[sum][mid] = cur;
if(left)
solve(l, mid - 1);
if(right)
solve(mid + 1, d);
}
int find_best(int n){
ans = -1;
solve(0, n - 1);
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
9636 KB |
Output is correct |
2 |
Correct |
15 ms |
9780 KB |
Output is correct |
3 |
Correct |
15 ms |
9856 KB |
Output is correct |
4 |
Correct |
13 ms |
9928 KB |
Output is correct |
5 |
Correct |
14 ms |
9928 KB |
Output is correct |
6 |
Correct |
14 ms |
9968 KB |
Output is correct |
7 |
Correct |
14 ms |
9968 KB |
Output is correct |
8 |
Correct |
14 ms |
9996 KB |
Output is correct |
9 |
Correct |
16 ms |
9996 KB |
Output is correct |
10 |
Correct |
15 ms |
9996 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
15 ms |
9996 KB |
Output is correct |
2 |
Correct |
15 ms |
9996 KB |
Output is correct |
3 |
Correct |
16 ms |
9996 KB |
Output is correct |
4 |
Correct |
15 ms |
9996 KB |
Output is correct |
5 |
Correct |
12 ms |
9996 KB |
Output is correct |
6 |
Correct |
15 ms |
9996 KB |
Output is correct |
7 |
Correct |
15 ms |
10108 KB |
Output is correct |
8 |
Correct |
14 ms |
10108 KB |
Output is correct |
9 |
Correct |
13 ms |
10108 KB |
Output is correct |
10 |
Correct |
15 ms |
10108 KB |
Output is correct |
11 |
Correct |
20 ms |
10108 KB |
Output is correct |
12 |
Correct |
12 ms |
10108 KB |
Output is correct |
13 |
Correct |
20 ms |
10108 KB |
Output is correct |
14 |
Correct |
15 ms |
10108 KB |
Output is correct |
15 |
Correct |
24 ms |
10108 KB |
Output is correct |
16 |
Correct |
57 ms |
10304 KB |
Output is correct |
17 |
Correct |
13 ms |
10304 KB |
Output is correct |
18 |
Correct |
77 ms |
10304 KB |
Output is correct |
19 |
Correct |
13 ms |
10304 KB |
Output is correct |
20 |
Correct |
19 ms |
10304 KB |
Output is correct |
21 |
Correct |
32 ms |
10304 KB |
Output is correct |
22 |
Correct |
17 ms |
10304 KB |
Output is correct |
23 |
Correct |
12 ms |
10304 KB |
Output is correct |
24 |
Correct |
13 ms |
10304 KB |
Output is correct |
25 |
Correct |
51 ms |
10304 KB |
Output is correct |
26 |
Correct |
45 ms |
10304 KB |
Output is correct |
27 |
Correct |
13 ms |
10304 KB |
Output is correct |
28 |
Correct |
51 ms |
10304 KB |
Output is correct |
29 |
Correct |
34 ms |
10304 KB |
Output is correct |
30 |
Correct |
59 ms |
10328 KB |
Output is correct |
31 |
Correct |
14 ms |
10328 KB |
Output is correct |
32 |
Correct |
12 ms |
10328 KB |
Output is correct |
33 |
Correct |
11 ms |
10328 KB |
Output is correct |
34 |
Correct |
22 ms |
10328 KB |
Output is correct |
35 |
Correct |
16 ms |
10328 KB |
Output is correct |
36 |
Correct |
19 ms |
10328 KB |
Output is correct |
37 |
Correct |
14 ms |
10328 KB |
Output is correct |
38 |
Correct |
12 ms |
10328 KB |
Output is correct |
39 |
Correct |
39 ms |
10328 KB |
Output is correct |
40 |
Correct |
39 ms |
10356 KB |
Output is correct |
41 |
Correct |
47 ms |
10356 KB |
Output is correct |
42 |
Correct |
36 ms |
10356 KB |
Output is correct |
43 |
Correct |
36 ms |
10356 KB |
Output is correct |
44 |
Correct |
25 ms |
10356 KB |
Output is correct |
45 |
Correct |
35 ms |
10356 KB |
Output is correct |
46 |
Correct |
13 ms |
10356 KB |
Output is correct |
47 |
Correct |
45 ms |
10356 KB |
Output is correct |
48 |
Correct |
49 ms |
10356 KB |
Output is correct |
49 |
Correct |
17 ms |
10356 KB |
Output is correct |
50 |
Correct |
41 ms |
10356 KB |
Output is correct |
51 |
Correct |
37 ms |
10356 KB |
Output is correct |
52 |
Correct |
15 ms |
10356 KB |
Output is correct |
53 |
Correct |
15 ms |
10356 KB |
Output is correct |
54 |
Correct |
38 ms |
10356 KB |
Output is correct |
55 |
Correct |
13 ms |
10356 KB |
Output is correct |
56 |
Correct |
65 ms |
10356 KB |
Output is correct |
57 |
Correct |
45 ms |
10356 KB |
Output is correct |
58 |
Correct |
58 ms |
10356 KB |
Output is correct |
59 |
Correct |
33 ms |
10356 KB |
Output is correct |
60 |
Correct |
47 ms |
10356 KB |
Output is correct |
61 |
Correct |
16 ms |
10356 KB |
Output is correct |
62 |
Correct |
13 ms |
10356 KB |
Output is correct |
63 |
Correct |
16 ms |
10356 KB |
Output is correct |
64 |
Correct |
15 ms |
10356 KB |
Output is correct |
65 |
Correct |
9 ms |
10356 KB |
Output is correct |
66 |
Correct |
13 ms |
10356 KB |
Output is correct |
67 |
Correct |
16 ms |
10356 KB |
Output is correct |
68 |
Correct |
18 ms |
10356 KB |
Output is correct |
69 |
Correct |
14 ms |
10356 KB |
Output is correct |
70 |
Correct |
13 ms |
10356 KB |
Output is correct |
71 |
Correct |
54 ms |
10356 KB |
Output is correct |
72 |
Correct |
17 ms |
10356 KB |
Output is correct |
73 |
Correct |
68 ms |
10356 KB |
Output is correct |
74 |
Correct |
57 ms |
10356 KB |
Output is correct |
75 |
Correct |
14 ms |
10356 KB |
Output is correct |
76 |
Correct |
30 ms |
10356 KB |
Output is correct |
77 |
Correct |
84 ms |
10356 KB |
Output is correct |
78 |
Correct |
16 ms |
10356 KB |
Output is correct |
79 |
Correct |
48 ms |
10356 KB |
Output is correct |
80 |
Correct |
64 ms |
10356 KB |
Output is correct |
81 |
Correct |
70 ms |
10384 KB |
Output is correct |
82 |
Correct |
57 ms |
10384 KB |
Output is correct |
83 |
Correct |
13 ms |
10384 KB |
Output is correct |
84 |
Correct |
51 ms |
10384 KB |
Output is correct |
85 |
Correct |
84 ms |
10384 KB |
Output is correct |
86 |
Correct |
19 ms |
10384 KB |
Output is correct |
87 |
Correct |
14 ms |
10384 KB |
Output is correct |
88 |
Correct |
21 ms |
10384 KB |
Output is correct |
89 |
Correct |
16 ms |
10384 KB |
Output is correct |
90 |
Correct |
16 ms |
10384 KB |
Output is correct |
91 |
Correct |
18 ms |
10384 KB |
Output is correct |
92 |
Correct |
13 ms |
10384 KB |
Output is correct |
93 |
Correct |
14 ms |
10384 KB |
Output is correct |
94 |
Correct |
14 ms |
10384 KB |
Output is correct |
95 |
Correct |
15 ms |
10384 KB |
Output is correct |
96 |
Correct |
17 ms |
10384 KB |
Output is correct |
97 |
Correct |
13 ms |
10384 KB |
Output is correct |