#include "prize.h"
#include <cmath>
#include <iostream>
#include <cassert>
using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))
int const nmax = 200000;
int identity = 0, diamond = -1;
int queries = 0;
std::vector<int> already[1 + nmax];
std::vector<int> realask(int x){
if(already[x].size() == 0) {
std::vector<int> sol = ask(x);
already[x] = sol;
if(sol[0] + sol[1] == 0)
diamond = x;
}
return already[x];
}
void solve(int from, int to, int left, int right){
///invalid interval
if(to < from) {
//std::cout << "Invalid\n";
return ;
}
///no special element here :(
if(identity == left + right) {
//std::cout << "Muggle\n";
return ;
}
///diamond was already found
if(0 <= diamond) {
//std::cout << "Already\n";
return ;
}
int mid = (from + to) / 2;
std::vector<int> sol = realask(mid);
if(sol[0] + sol[1] == identity){
solve(from, mid - 1, left, sol[1]);
solve(mid + 1, to, sol[0], right);
} else {
int mid2 = mid + 1;
while(mid2 <= to){
sol = realask(mid2);
if(sol[0] + sol[1] == identity) {
solve(mid2 + 1, to, sol[0], right);
break;
}
mid2++;
}
mid2 = mid - 1;
while(from <= mid2){
sol = realask(mid2);
if(sol[0] + sol[1] == identity){
solve(from, mid2 - 1, left, sol[1]);
break;
}
mid2--;
}
}
}
int find_best(int n) {
int special = 0;
int n2 = sqrt(n);
while(1 <= n2){
special += n2;
n2 = sqrt(n2 - 1);
}
//special = 0;
//std::cout << n << " " << special << '\n';
assert(special <= 800);
for(int i = 0;i < MIN(special + 1, n - 1); i++){
std::vector<int> sol = realask(i);
identity = MAX(identity, sol[0] + sol[1]);
}
solve(0, n - 1, 0, 0);
assert(0 <= diamond);
assert(queries <= 10000);
return diamond;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
8 ms |
5128 KB |
Output is correct |
| 3 |
Correct |
9 ms |
5128 KB |
Output is correct |
| 4 |
Correct |
12 ms |
5112 KB |
Output is correct |
| 5 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5120 KB |
Output is correct |
| 7 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 8 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
9 ms |
5256 KB |
Output is correct |
| 10 |
Correct |
11 ms |
4984 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
11 ms |
5092 KB |
Output is correct |
| 3 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
10 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5128 KB |
Output is correct |
| 7 |
Correct |
9 ms |
5128 KB |
Output is correct |
| 8 |
Correct |
10 ms |
5012 KB |
Output is correct |
| 9 |
Correct |
8 ms |
5020 KB |
Output is correct |
| 10 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 11 |
Correct |
13 ms |
4984 KB |
Output is correct |
| 12 |
Correct |
10 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
9 ms |
5056 KB |
Output is correct |
| 14 |
Correct |
9 ms |
4984 KB |
Output is correct |
| 15 |
Correct |
15 ms |
5044 KB |
Output is correct |
| 16 |
Correct |
49 ms |
5248 KB |
Output is correct |
| 17 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 18 |
Partially correct |
36 ms |
5220 KB |
Partially correct - number of queries: 5089 |
| 19 |
Correct |
12 ms |
5032 KB |
Output is correct |
| 20 |
Correct |
13 ms |
5156 KB |
Output is correct |
| 21 |
Correct |
17 ms |
5080 KB |
Output is correct |
| 22 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
9 ms |
5128 KB |
Output is correct |
| 24 |
Correct |
10 ms |
4984 KB |
Output is correct |
| 25 |
Correct |
33 ms |
5032 KB |
Output is correct |
| 26 |
Correct |
39 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
9 ms |
5128 KB |
Output is correct |
| 28 |
Correct |
28 ms |
5148 KB |
Output is correct |
| 29 |
Correct |
40 ms |
5104 KB |
Output is correct |
| 30 |
Partially correct |
52 ms |
5112 KB |
Partially correct - number of queries: 5058 |
| 31 |
Correct |
8 ms |
5020 KB |
Output is correct |
| 32 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 33 |
Correct |
6 ms |
4984 KB |
Output is correct |
| 34 |
Correct |
19 ms |
5056 KB |
Output is correct |
| 35 |
Correct |
13 ms |
5032 KB |
Output is correct |
| 36 |
Correct |
23 ms |
5052 KB |
Output is correct |
| 37 |
Correct |
13 ms |
4984 KB |
Output is correct |
| 38 |
Correct |
10 ms |
4984 KB |
Output is correct |
| 39 |
Correct |
35 ms |
5012 KB |
Output is correct |
| 40 |
Correct |
49 ms |
5112 KB |
Output is correct |
| 41 |
Correct |
30 ms |
5088 KB |
Output is correct |
| 42 |
Correct |
28 ms |
5156 KB |
Output is correct |
| 43 |
Correct |
20 ms |
5196 KB |
Output is correct |
| 44 |
Correct |
30 ms |
5112 KB |
Output is correct |
| 45 |
Correct |
24 ms |
4984 KB |
Output is correct |
| 46 |
Correct |
8 ms |
5128 KB |
Output is correct |
| 47 |
Correct |
18 ms |
5188 KB |
Output is correct |
| 48 |
Correct |
41 ms |
5112 KB |
Output is correct |
| 49 |
Correct |
16 ms |
4984 KB |
Output is correct |
| 50 |
Partially correct |
60 ms |
5160 KB |
Partially correct - number of queries: 5095 |
| 51 |
Correct |
18 ms |
5164 KB |
Output is correct |
| 52 |
Correct |
16 ms |
5108 KB |
Output is correct |
| 53 |
Correct |
12 ms |
4944 KB |
Output is correct |
| 54 |
Correct |
33 ms |
5112 KB |
Output is correct |
| 55 |
Correct |
10 ms |
4984 KB |
Output is correct |
| 56 |
Partially correct |
55 ms |
5148 KB |
Partially correct - number of queries: 5100 |
| 57 |
Correct |
29 ms |
5100 KB |
Output is correct |
| 58 |
Correct |
22 ms |
5208 KB |
Output is correct |
| 59 |
Correct |
42 ms |
4984 KB |
Output is correct |
| 60 |
Correct |
34 ms |
4984 KB |
Output is correct |
| 61 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 62 |
Correct |
8 ms |
5128 KB |
Output is correct |
| 63 |
Correct |
10 ms |
5056 KB |
Output is correct |
| 64 |
Correct |
11 ms |
5112 KB |
Output is correct |
| 65 |
Correct |
11 ms |
5012 KB |
Output is correct |
| 66 |
Correct |
15 ms |
4984 KB |
Output is correct |
| 67 |
Correct |
17 ms |
4988 KB |
Output is correct |
| 68 |
Correct |
11 ms |
5112 KB |
Output is correct |
| 69 |
Correct |
14 ms |
5028 KB |
Output is correct |
| 70 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 71 |
Partially correct |
55 ms |
5112 KB |
Partially correct - number of queries: 5232 |
| 72 |
Correct |
15 ms |
5016 KB |
Output is correct |
| 73 |
Partially correct |
47 ms |
5164 KB |
Partially correct - number of queries: 5169 |
| 74 |
Partially correct |
39 ms |
5236 KB |
Partially correct - number of queries: 5196 |
| 75 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 76 |
Correct |
57 ms |
5160 KB |
Output is correct |
| 77 |
Partially correct |
60 ms |
5232 KB |
Partially correct - number of queries: 5198 |
| 78 |
Correct |
16 ms |
4988 KB |
Output is correct |
| 79 |
Correct |
32 ms |
4984 KB |
Output is correct |
| 80 |
Partially correct |
73 ms |
5112 KB |
Partially correct - number of queries: 5187 |
| 81 |
Partially correct |
58 ms |
5244 KB |
Partially correct - number of queries: 5194 |
| 82 |
Partially correct |
64 ms |
5116 KB |
Partially correct - number of queries: 5150 |
| 83 |
Correct |
14 ms |
4984 KB |
Output is correct |
| 84 |
Correct |
56 ms |
5116 KB |
Output is correct |
| 85 |
Partially correct |
65 ms |
5112 KB |
Partially correct - number of queries: 5221 |
| 86 |
Correct |
9 ms |
5120 KB |
Output is correct |
| 87 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 88 |
Correct |
11 ms |
4984 KB |
Output is correct |
| 89 |
Correct |
11 ms |
5032 KB |
Output is correct |
| 90 |
Correct |
8 ms |
5120 KB |
Output is correct |
| 91 |
Correct |
9 ms |
5128 KB |
Output is correct |
| 92 |
Correct |
12 ms |
4984 KB |
Output is correct |
| 93 |
Correct |
14 ms |
5024 KB |
Output is correct |
| 94 |
Correct |
10 ms |
5120 KB |
Output is correct |
| 95 |
Correct |
15 ms |
4984 KB |
Output is correct |
| 96 |
Correct |
15 ms |
5116 KB |
Output is correct |
| 97 |
Correct |
12 ms |
4984 KB |
Output is correct |
