#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
map<int, pair<int, int> > mp;
pair<int, int> Ask(int x){
if(mp.find(x) != mp.end()){
return mp[x];
}
auto q = ask(x);
return mp[x] = make_pair(q[0], q[1]);
}
int find_best(int n) {
if(n <= 5000){
for(int i = 0; i < n; i++) {
vector<int> ans = ask(i);
if(ans[0] + ans[1] == 0){
return i;
}
}
}
vector<int> cur;
for(int i = 0; i <= 500; i++){
cur.push_back(((n-1) * i) / 500);
}
int value1 = 0;
for(int i = 0; i < cur.size(); i++){
pair<int, int> value2 = Ask(cur[i]);
value1 = max(value1, value2.first + value2.second);
}
auto check = [&](int x){
pair<int, int> value2 = Ask(x);
return value2.first + value2.second != value1;
};
for(int i =0 ; i < n; i++){
if(check(i)){
pair<int, int> value2 = Ask(i);
if(value2.first + value2.second == 0){
return i;
}
}
else{
auto works = [&](int x, int y){
if(check(y)) return true;
auto value2 = Ask(x).second;
auto q = Ask(y).second;
return value2 != q;
};
int low = i + 1;
int high = n + 100;
for(auto &j : cur){
if(j > i && works(i, j)){
high = j;
break;
}
low = max(low, j);
}
while(low != high){
int mid = (low + high) / 2;
if(works(i, mid)) high = mid;
else low = mid + 1;
}
i = low - 1;
}
}
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:26:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for(int i = 0; i < cur.size(); i++){
| ~~^~~~~~~~~~~~
prize.cpp:21:14: warning: control reaches end of non-void function [-Wreturn-type]
21 | vector<int> cur;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
296 KB |
Output is correct |
| 2 |
Correct |
3 ms |
320 KB |
Output is correct |
| 3 |
Correct |
5 ms |
288 KB |
Output is correct |
| 4 |
Correct |
6 ms |
308 KB |
Output is correct |
| 5 |
Correct |
4 ms |
324 KB |
Output is correct |
| 6 |
Correct |
5 ms |
292 KB |
Output is correct |
| 7 |
Correct |
5 ms |
292 KB |
Output is correct |
| 8 |
Correct |
3 ms |
316 KB |
Output is correct |
| 9 |
Correct |
5 ms |
308 KB |
Output is correct |
| 10 |
Correct |
6 ms |
324 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
300 KB |
Output is correct |
| 2 |
Correct |
3 ms |
356 KB |
Output is correct |
| 3 |
Correct |
6 ms |
336 KB |
Output is correct |
| 4 |
Correct |
4 ms |
208 KB |
Output is correct |
| 5 |
Correct |
6 ms |
292 KB |
Output is correct |
| 6 |
Correct |
3 ms |
312 KB |
Output is correct |
| 7 |
Correct |
4 ms |
208 KB |
Output is correct |
| 8 |
Correct |
6 ms |
208 KB |
Output is correct |
| 9 |
Correct |
6 ms |
288 KB |
Output is correct |
| 10 |
Correct |
4 ms |
208 KB |
Output is correct |
| 11 |
Correct |
8 ms |
288 KB |
Output is correct |
| 12 |
Correct |
5 ms |
312 KB |
Output is correct |
| 13 |
Correct |
9 ms |
324 KB |
Output is correct |
| 14 |
Correct |
7 ms |
336 KB |
Output is correct |
| 15 |
Correct |
13 ms |
312 KB |
Output is correct |
| 16 |
Correct |
38 ms |
536 KB |
Output is correct |
| 17 |
Correct |
5 ms |
296 KB |
Output is correct |
| 18 |
Correct |
43 ms |
536 KB |
Output is correct |
| 19 |
Correct |
6 ms |
208 KB |
Output is correct |
| 20 |
Correct |
10 ms |
312 KB |
Output is correct |
| 21 |
Correct |
12 ms |
372 KB |
Output is correct |
| 22 |
Correct |
7 ms |
332 KB |
Output is correct |
| 23 |
Correct |
6 ms |
292 KB |
Output is correct |
| 24 |
Correct |
5 ms |
292 KB |
Output is correct |
| 25 |
Correct |
31 ms |
364 KB |
Output is correct |
| 26 |
Correct |
23 ms |
412 KB |
Output is correct |
| 27 |
Correct |
3 ms |
300 KB |
Output is correct |
| 28 |
Correct |
20 ms |
544 KB |
Output is correct |
| 29 |
Correct |
16 ms |
484 KB |
Output is correct |
| 30 |
Correct |
36 ms |
460 KB |
Output is correct |
| 31 |
Correct |
5 ms |
208 KB |
Output is correct |
| 32 |
Correct |
6 ms |
420 KB |
Output is correct |
| 33 |
Correct |
0 ms |
208 KB |
Output is correct |
| 34 |
Correct |
20 ms |
284 KB |
Output is correct |
| 35 |
Correct |
5 ms |
280 KB |
Output is correct |
| 36 |
Correct |
16 ms |
280 KB |
Output is correct |
| 37 |
Correct |
3 ms |
316 KB |
Output is correct |
| 38 |
Correct |
8 ms |
284 KB |
Output is correct |
| 39 |
Correct |
29 ms |
388 KB |
Output is correct |
| 40 |
Correct |
38 ms |
412 KB |
Output is correct |
| 41 |
Correct |
37 ms |
408 KB |
Output is correct |
| 42 |
Correct |
34 ms |
452 KB |
Output is correct |
| 43 |
Correct |
29 ms |
420 KB |
Output is correct |
| 44 |
Correct |
10 ms |
472 KB |
Output is correct |
| 45 |
Correct |
15 ms |
284 KB |
Output is correct |
| 46 |
Correct |
5 ms |
208 KB |
Output is correct |
| 47 |
Correct |
20 ms |
352 KB |
Output is correct |
| 48 |
Correct |
33 ms |
528 KB |
Output is correct |
| 49 |
Correct |
4 ms |
328 KB |
Output is correct |
| 50 |
Correct |
22 ms |
564 KB |
Output is correct |
| 51 |
Correct |
18 ms |
412 KB |
Output is correct |
| 52 |
Correct |
6 ms |
284 KB |
Output is correct |
| 53 |
Correct |
7 ms |
292 KB |
Output is correct |
| 54 |
Correct |
11 ms |
480 KB |
Output is correct |
| 55 |
Correct |
3 ms |
312 KB |
Output is correct |
| 56 |
Correct |
53 ms |
564 KB |
Output is correct |
| 57 |
Correct |
39 ms |
444 KB |
Output is correct |
| 58 |
Correct |
36 ms |
416 KB |
Output is correct |
| 59 |
Correct |
29 ms |
436 KB |
Output is correct |
| 60 |
Correct |
21 ms |
412 KB |
Output is correct |
| 61 |
Correct |
5 ms |
292 KB |
Output is correct |
| 62 |
Correct |
3 ms |
296 KB |
Output is correct |
| 63 |
Correct |
5 ms |
288 KB |
Output is correct |
| 64 |
Correct |
5 ms |
288 KB |
Output is correct |
| 65 |
Correct |
9 ms |
420 KB |
Output is correct |
| 66 |
Correct |
10 ms |
268 KB |
Output is correct |
| 67 |
Correct |
5 ms |
280 KB |
Output is correct |
| 68 |
Correct |
8 ms |
328 KB |
Output is correct |
| 69 |
Correct |
11 ms |
336 KB |
Output is correct |
| 70 |
Correct |
5 ms |
208 KB |
Output is correct |
| 71 |
Correct |
42 ms |
472 KB |
Output is correct |
| 72 |
Correct |
8 ms |
328 KB |
Output is correct |
| 73 |
Correct |
44 ms |
544 KB |
Output is correct |
| 74 |
Correct |
38 ms |
464 KB |
Output is correct |
| 75 |
Correct |
5 ms |
336 KB |
Output is correct |
| 76 |
Correct |
34 ms |
496 KB |
Output is correct |
| 77 |
Correct |
59 ms |
572 KB |
Output is correct |
| 78 |
Correct |
5 ms |
304 KB |
Output is correct |
| 79 |
Correct |
32 ms |
408 KB |
Output is correct |
| 80 |
Correct |
52 ms |
572 KB |
Output is correct |
| 81 |
Correct |
60 ms |
568 KB |
Output is correct |
| 82 |
Correct |
58 ms |
552 KB |
Output is correct |
| 83 |
Correct |
7 ms |
208 KB |
Output is correct |
| 84 |
Correct |
34 ms |
588 KB |
Output is correct |
| 85 |
Correct |
53 ms |
476 KB |
Output is correct |
| 86 |
Correct |
39 ms |
452 KB |
Output is correct |
| 87 |
Correct |
8 ms |
316 KB |
Output is correct |
| 88 |
Correct |
37 ms |
572 KB |
Output is correct |
| 89 |
Correct |
43 ms |
424 KB |
Output is correct |
| 90 |
Correct |
6 ms |
336 KB |
Output is correct |
| 91 |
Correct |
22 ms |
336 KB |
Output is correct |
| 92 |
Correct |
36 ms |
472 KB |
Output is correct |
| 93 |
Correct |
55 ms |
452 KB |
Output is correct |
| 94 |
Correct |
35 ms |
496 KB |
Output is correct |
| 95 |
Correct |
41 ms |
528 KB |
Output is correct |
| 96 |
Correct |
38 ms |
492 KB |
Output is correct |
| 97 |
Correct |
48 ms |
540 KB |
Output is correct |
