#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
map<int, vector<int>> M, Li;
vector<int> self_ask(int i){
if(!M.count(i)) M[i] = ask(i); vector<int> r = M[i];
Li[r[0] + r[1]].push_back(i);
return r;
}
vector<int> b;
bool failed = false, done = false, un = true;
mt19937 rng(0);
int cc, ans;
void solve(int l, int r, int lc, int rc){
if(l > r || lc == rc) return;
int L = (l + r) / 2, R = (l + r) / 2 + 1, F = 0;
int c; vector<int> a;
while(true){
c = F ? R++ : L--; F ^= 1;
a = self_ask(c);
if(a[0] + a[1] == 0){
done = true; failed = true; ans = c;
}
if(un || a[0] + a[1] > cc){
failed = true; un = false; cc = a[0] + a[1];
return;
}
if(a[0] + a[1] == cc || R - L - 1 == rc - lc){
break;
}
}
if(R - L + 1 == rc - lc && a[0] + a[1] != cc) return;
if(c == L + 1){
solve(l, L, lc, a[0]); if(failed) return;
solve(R, r, a[0] + (R - L - 2), rc); if(failed) return;
}else{
solve(l, L, lc, a[0] - (R - L - 2)); if(failed) return;
solve(R, r, a[0], rc); if(failed) return;
}
}
int find_best(int n) {
cc = n;
do{
failed = false;
solve(0, n - 1, 0, cc);
if(done) break;
}while(failed);
if(done){
return ans;
}
}
Compilation message
prize.cpp: In function 'std::vector<int> self_ask(int)':
prize.cpp:8:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
8 | if(!M.count(i)) M[i] = ask(i); vector<int> r = M[i];
| ^~
prize.cpp:8:33: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
8 | if(!M.count(i)) M[i] = ask(i); vector<int> r = M[i];
| ^~~~~~
prize.cpp: In function 'int find_best(int)':
prize.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type]
56 | }
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
300 KB |
Output is correct |
| 2 |
Correct |
1 ms |
304 KB |
Output is correct |
| 3 |
Correct |
0 ms |
300 KB |
Output is correct |
| 4 |
Correct |
0 ms |
304 KB |
Output is correct |
| 5 |
Correct |
0 ms |
296 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
1 ms |
296 KB |
Output is correct |
| 8 |
Correct |
0 ms |
292 KB |
Output is correct |
| 9 |
Correct |
0 ms |
208 KB |
Output is correct |
| 10 |
Correct |
0 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
300 KB |
Output is correct |
| 2 |
Correct |
1 ms |
300 KB |
Output is correct |
| 3 |
Correct |
1 ms |
300 KB |
Output is correct |
| 4 |
Correct |
1 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
292 KB |
Output is correct |
| 6 |
Correct |
0 ms |
208 KB |
Output is correct |
| 7 |
Correct |
0 ms |
304 KB |
Output is correct |
| 8 |
Correct |
1 ms |
208 KB |
Output is correct |
| 9 |
Correct |
0 ms |
292 KB |
Output is correct |
| 10 |
Correct |
0 ms |
208 KB |
Output is correct |
| 11 |
Correct |
1 ms |
308 KB |
Output is correct |
| 12 |
Correct |
1 ms |
208 KB |
Output is correct |
| 13 |
Correct |
3 ms |
312 KB |
Output is correct |
| 14 |
Correct |
1 ms |
208 KB |
Output is correct |
| 15 |
Correct |
5 ms |
296 KB |
Output is correct |
| 16 |
Correct |
36 ms |
764 KB |
Output is correct |
| 17 |
Correct |
0 ms |
296 KB |
Output is correct |
| 18 |
Partially correct |
45 ms |
852 KB |
Partially correct - number of queries: 5028 |
| 19 |
Correct |
1 ms |
308 KB |
Output is correct |
| 20 |
Correct |
15 ms |
336 KB |
Output is correct |
| 21 |
Correct |
16 ms |
392 KB |
Output is correct |
| 22 |
Correct |
4 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
300 KB |
Output is correct |
| 24 |
Correct |
1 ms |
292 KB |
Output is correct |
| 25 |
Correct |
13 ms |
624 KB |
Output is correct |
| 26 |
Correct |
19 ms |
540 KB |
Output is correct |
| 27 |
Correct |
1 ms |
284 KB |
Output is correct |
| 28 |
Correct |
18 ms |
780 KB |
Output is correct |
| 29 |
Correct |
29 ms |
584 KB |
Output is correct |
| 30 |
Partially correct |
44 ms |
824 KB |
Partially correct - number of queries: 5024 |
| 31 |
Correct |
1 ms |
304 KB |
Output is correct |
| 32 |
Correct |
2 ms |
336 KB |
Output is correct |
| 33 |
Correct |
0 ms |
208 KB |
Output is correct |
| 34 |
Correct |
17 ms |
416 KB |
Output is correct |
| 35 |
Correct |
2 ms |
292 KB |
Output is correct |
| 36 |
Correct |
7 ms |
336 KB |
Output is correct |
| 37 |
Correct |
1 ms |
304 KB |
Output is correct |
| 38 |
Correct |
0 ms |
304 KB |
Output is correct |
| 39 |
Correct |
9 ms |
540 KB |
Output is correct |
| 40 |
Correct |
35 ms |
704 KB |
Output is correct |
| 41 |
Correct |
14 ms |
616 KB |
Output is correct |
| 42 |
Correct |
26 ms |
584 KB |
Output is correct |
| 43 |
Correct |
10 ms |
592 KB |
Output is correct |
| 44 |
Correct |
14 ms |
488 KB |
Output is correct |
| 45 |
Correct |
12 ms |
452 KB |
Output is correct |
| 46 |
Correct |
1 ms |
292 KB |
Output is correct |
| 47 |
Correct |
9 ms |
516 KB |
Output is correct |
| 48 |
Correct |
30 ms |
584 KB |
Output is correct |
| 49 |
Correct |
4 ms |
344 KB |
Output is correct |
| 50 |
Partially correct |
44 ms |
768 KB |
Partially correct - number of queries: 5056 |
| 51 |
Correct |
8 ms |
464 KB |
Output is correct |
| 52 |
Correct |
1 ms |
296 KB |
Output is correct |
| 53 |
Correct |
1 ms |
316 KB |
Output is correct |
| 54 |
Correct |
20 ms |
428 KB |
Output is correct |
| 55 |
Correct |
1 ms |
208 KB |
Output is correct |
| 56 |
Partially correct |
43 ms |
820 KB |
Partially correct - number of queries: 5058 |
| 57 |
Correct |
20 ms |
596 KB |
Output is correct |
| 58 |
Correct |
33 ms |
664 KB |
Output is correct |
| 59 |
Correct |
26 ms |
564 KB |
Output is correct |
| 60 |
Correct |
16 ms |
572 KB |
Output is correct |
| 61 |
Correct |
2 ms |
296 KB |
Output is correct |
| 62 |
Correct |
1 ms |
296 KB |
Output is correct |
| 63 |
Correct |
1 ms |
312 KB |
Output is correct |
| 64 |
Correct |
1 ms |
308 KB |
Output is correct |
| 65 |
Correct |
1 ms |
292 KB |
Output is correct |
| 66 |
Correct |
6 ms |
400 KB |
Output is correct |
| 67 |
Correct |
1 ms |
308 KB |
Output is correct |
| 68 |
Correct |
3 ms |
336 KB |
Output is correct |
| 69 |
Correct |
4 ms |
296 KB |
Output is correct |
| 70 |
Correct |
2 ms |
320 KB |
Output is correct |
| 71 |
Correct |
39 ms |
824 KB |
Output is correct |
| 72 |
Correct |
3 ms |
324 KB |
Output is correct |
| 73 |
Correct |
38 ms |
796 KB |
Output is correct |
| 74 |
Correct |
34 ms |
812 KB |
Output is correct |
| 75 |
Correct |
1 ms |
208 KB |
Output is correct |
| 76 |
Correct |
27 ms |
688 KB |
Output is correct |
| 77 |
Partially correct |
33 ms |
788 KB |
Partially correct - number of queries: 5214 |
| 78 |
Correct |
4 ms |
336 KB |
Output is correct |
| 79 |
Correct |
23 ms |
556 KB |
Output is correct |
| 80 |
Partially correct |
46 ms |
1028 KB |
Partially correct - number of queries: 5246 |
| 81 |
Partially correct |
39 ms |
832 KB |
Partially correct - number of queries: 5210 |
| 82 |
Partially correct |
51 ms |
864 KB |
Partially correct - number of queries: 5201 |
| 83 |
Correct |
1 ms |
300 KB |
Output is correct |
| 84 |
Correct |
24 ms |
1044 KB |
Output is correct |
| 85 |
Partially correct |
42 ms |
856 KB |
Partially correct - number of queries: 5180 |
| 86 |
Correct |
6 ms |
316 KB |
Output is correct |
| 87 |
Correct |
1 ms |
208 KB |
Output is correct |
| 88 |
Correct |
5 ms |
336 KB |
Output is correct |
| 89 |
Correct |
6 ms |
352 KB |
Output is correct |
| 90 |
Correct |
1 ms |
208 KB |
Output is correct |
| 91 |
Correct |
3 ms |
336 KB |
Output is correct |
| 92 |
Correct |
5 ms |
336 KB |
Output is correct |
| 93 |
Correct |
3 ms |
336 KB |
Output is correct |
| 94 |
Correct |
2 ms |
336 KB |
Output is correct |
| 95 |
Correct |
4 ms |
328 KB |
Output is correct |
| 96 |
Correct |
3 ms |
336 KB |
Output is correct |
| 97 |
Correct |
1 ms |
208 KB |
Output is correct |
