#include "prize.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <cmath>
#include <cassert>
#include <random>
using namespace std;
#define rep(i,n)for (int i=0; i<(n); i++)
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define _1 first
#define _2 second
#define INF 1145141919
typedef pair<int, int> P;
mt19937 mt_rand(114514);
int mp = 0;
P cache[200000];
int Q=0;
P query(int x) {
if (cache[x] != P(-1, -1)) return cache[x];
Q++;
assert(Q<=10000);
//if(Q%100==0)cout<<"Q="<<Q<<"\n";
vector<int> ret = ask(x);
return cache[x] = {ret[0], ret[1]};
}
int solve(int l, int r, int num, int left) {
assert(num >= 0 && left >= 0);
if (num == 0) return -1;
//cout<<"solve("<<l<<","<<r<<", num="<<num<<")\n";
int mm = (l+r)/2;
//int mm = l+(mt_rand()%(r-l+1));
for (int mid=mm+1; mid<=r; mid++) {
P ret = query(mid);
if (ret._1+ret._2 == 0) return mid;
if (ret._1+ret._2 != mp) continue;
if (mid > l) {
int o = solve(l, mid-1, ret._1-left, left);
if (o != -1) return o;
}
if (mid < r) {
int o = solve(mid+1, r, num-(ret._1-left), ret._1);
if (o != -1) return o;
}
return -1;
}
for (int mid=mm; mid>=l; mid--) {
P ret = query(mid);
if (ret._1+ret._2 == 0) return mid;
if (ret._1+ret._2 != mp) continue;
if (mid > l) {
int o = solve(l, mid-1, ret._1-left, left);
if (o != -1) return o;
}
if (mid < r) {
int o = solve(mid+1, r, num-(ret._1-left), ret._1);
if (o != -1) return o;
}
return -1;
}
return -1;
}
int find_best(int N) {
rep(i, N) cache[i] = P(-1, -1);
if (N <= 5000) {
rep(i, N) {
P ret = query(i);
if (ret._1+ret._2 == 0) return i;
}
abort();
}
rep(i, 500) {
P ret = query(mt_rand()%N);
mp = max(mp, ret._1+ret._2);
}
//cout<<"mp="<<mp<<"\n";
int r = solve(0, N-1, mp, 0);
assert(r != -1);
return r;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
1784 KB |
Output is correct |
| 2 |
Correct |
13 ms |
1972 KB |
Output is correct |
| 3 |
Correct |
9 ms |
1972 KB |
Output is correct |
| 4 |
Correct |
15 ms |
1972 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
1984 KB |
Output is correct |
| 7 |
Correct |
14 ms |
2028 KB |
Output is correct |
| 8 |
Correct |
13 ms |
2036 KB |
Output is correct |
| 9 |
Correct |
10 ms |
2056 KB |
Output is correct |
| 10 |
Correct |
7 ms |
2056 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 2 |
Correct |
8 ms |
2220 KB |
Output is correct |
| 3 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 4 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 5 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 6 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 7 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 8 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 9 |
Correct |
11 ms |
2220 KB |
Output is correct |
| 10 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 11 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 12 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 13 |
Correct |
16 ms |
2220 KB |
Output is correct |
| 14 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 15 |
Correct |
18 ms |
2220 KB |
Output is correct |
| 16 |
Correct |
42 ms |
2220 KB |
Output is correct |
| 17 |
Correct |
5 ms |
2220 KB |
Output is correct |
| 18 |
Partially correct |
53 ms |
2220 KB |
Partially correct - number of queries: 5280 |
| 19 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 20 |
Correct |
19 ms |
2220 KB |
Output is correct |
| 21 |
Correct |
25 ms |
2220 KB |
Output is correct |
| 22 |
Correct |
12 ms |
2220 KB |
Output is correct |
| 23 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 24 |
Correct |
7 ms |
2220 KB |
Output is correct |
| 25 |
Correct |
31 ms |
2220 KB |
Output is correct |
| 26 |
Correct |
18 ms |
2220 KB |
Output is correct |
| 27 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 28 |
Correct |
56 ms |
2220 KB |
Output is correct |
| 29 |
Correct |
48 ms |
2220 KB |
Output is correct |
| 30 |
Partially correct |
61 ms |
2220 KB |
Partially correct - number of queries: 5228 |
| 31 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 32 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2220 KB |
Output is correct |
| 34 |
Correct |
25 ms |
2220 KB |
Output is correct |
| 35 |
Correct |
8 ms |
2220 KB |
Output is correct |
| 36 |
Correct |
21 ms |
2220 KB |
Output is correct |
| 37 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 38 |
Correct |
12 ms |
2220 KB |
Output is correct |
| 39 |
Correct |
37 ms |
2220 KB |
Output is correct |
| 40 |
Correct |
53 ms |
2220 KB |
Output is correct |
| 41 |
Correct |
27 ms |
2220 KB |
Output is correct |
| 42 |
Correct |
44 ms |
2220 KB |
Output is correct |
| 43 |
Correct |
31 ms |
2220 KB |
Output is correct |
| 44 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 45 |
Correct |
24 ms |
2220 KB |
Output is correct |
| 46 |
Correct |
11 ms |
2220 KB |
Output is correct |
| 47 |
Correct |
27 ms |
2220 KB |
Output is correct |
| 48 |
Correct |
30 ms |
2220 KB |
Output is correct |
| 49 |
Correct |
15 ms |
2220 KB |
Output is correct |
| 50 |
Partially correct |
72 ms |
2220 KB |
Partially correct - number of queries: 5275 |
| 51 |
Correct |
33 ms |
2220 KB |
Output is correct |
| 52 |
Correct |
10 ms |
2220 KB |
Output is correct |
| 53 |
Correct |
11 ms |
2220 KB |
Output is correct |
| 54 |
Correct |
17 ms |
2220 KB |
Output is correct |
| 55 |
Correct |
8 ms |
2220 KB |
Output is correct |
| 56 |
Partially correct |
70 ms |
2220 KB |
Partially correct - number of queries: 5259 |
| 57 |
Correct |
55 ms |
2220 KB |
Output is correct |
| 58 |
Correct |
53 ms |
2220 KB |
Output is correct |
| 59 |
Correct |
28 ms |
2220 KB |
Output is correct |
| 60 |
Correct |
34 ms |
2220 KB |
Output is correct |
| 61 |
Correct |
12 ms |
2220 KB |
Output is correct |
| 62 |
Correct |
5 ms |
2220 KB |
Output is correct |
| 63 |
Correct |
8 ms |
2220 KB |
Output is correct |
| 64 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 65 |
Correct |
14 ms |
2220 KB |
Output is correct |
| 66 |
Correct |
15 ms |
2220 KB |
Output is correct |
| 67 |
Correct |
12 ms |
2220 KB |
Output is correct |
| 68 |
Correct |
12 ms |
2220 KB |
Output is correct |
| 69 |
Correct |
11 ms |
2220 KB |
Output is correct |
| 70 |
Correct |
7 ms |
2220 KB |
Output is correct |
| 71 |
Partially correct |
79 ms |
2220 KB |
Partially correct - number of queries: 5708 |
| 72 |
Correct |
15 ms |
2220 KB |
Output is correct |
| 73 |
Partially correct |
61 ms |
2220 KB |
Partially correct - number of queries: 5640 |
| 74 |
Partially correct |
91 ms |
2220 KB |
Partially correct - number of queries: 5670 |
| 75 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 76 |
Partially correct |
25 ms |
2220 KB |
Partially correct - number of queries: 5003 |
| 77 |
Partially correct |
60 ms |
2220 KB |
Partially correct - number of queries: 5551 |
| 78 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 79 |
Correct |
46 ms |
2220 KB |
Output is correct |
| 80 |
Partially correct |
101 ms |
2220 KB |
Partially correct - number of queries: 5540 |
| 81 |
Partially correct |
63 ms |
2220 KB |
Partially correct - number of queries: 5543 |
| 82 |
Partially correct |
74 ms |
2220 KB |
Partially correct - number of queries: 5508 |
| 83 |
Correct |
9 ms |
2220 KB |
Output is correct |
| 84 |
Correct |
42 ms |
2220 KB |
Output is correct |
| 85 |
Partially correct |
51 ms |
2220 KB |
Partially correct - number of queries: 5560 |
| 86 |
Correct |
38 ms |
2220 KB |
Output is correct |
| 87 |
Correct |
8 ms |
2220 KB |
Output is correct |
| 88 |
Correct |
39 ms |
2220 KB |
Output is correct |
| 89 |
Correct |
49 ms |
2220 KB |
Output is correct |
| 90 |
Correct |
13 ms |
2220 KB |
Output is correct |
| 91 |
Correct |
30 ms |
2220 KB |
Output is correct |
| 92 |
Correct |
44 ms |
2220 KB |
Output is correct |
| 93 |
Correct |
47 ms |
2220 KB |
Output is correct |
| 94 |
Correct |
27 ms |
2220 KB |
Output is correct |
| 95 |
Correct |
49 ms |
2220 KB |
Output is correct |
| 96 |
Correct |
69 ms |
2220 KB |
Output is correct |
| 97 |
Correct |
53 ms |
2220 KB |
Output is correct |
