#include <bits/stdc++.h>
using namespace std;
vector<int> ask(int i);
int mx = 0, idx = 0;
int solve(int l, int r, int cntl, int cntr){
if(l > r || cntl == cntr){
return -1;
}
int mid = (l + r) >> 1;
vector<int> a = ask(mid);
int curr = a[0] + a[1];
if(curr == 0){
return mid;
}
if(curr < mx){
int i;
for(i = mid - 1; i >= l; i--){
a = ask(i);
curr = a[0] + a[1];
if(curr == 0){
return i;
}
if(curr == mx){
if(rand() % 2){
int rval = solve(mid + 1, r, a[0] + (mid - i), cntr);
if(rval != -1){
return rval;
}
return solve(l, i, cntl, a[0]);
}
else{
int rval = solve(l, i, cntl, a[0]);
if(rval != -1){
return rval;
}
return solve(mid + 1, r, a[0] + (mid - i), cntr);
}
}
}
return solve(mid + 1, r, cntl + (mid - i), cntr);
}
int rval = solve(mid + 1, r, a[0], cntr);
if(rval != -1){
return rval;
}
return solve(l, mid - 1, cntl, a[0]);
}
int find_best(int n){
int l = 0, r = n - 1;
int pr = n;
for(int i = 0; i < min(n, 472); i++){
vector<int> a = ask(i);
int curr = a[0] + a[1];
if(curr > mx){
mx = curr;
idx = i;
}
}
return solve(0, n - 1, 0, mx);
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:65:6: warning: unused variable 'l' [-Wunused-variable]
int l = 0, r = n - 1;
^
prize.cpp:65:13: warning: unused variable 'r' [-Wunused-variable]
int l = 0, r = n - 1;
^
prize.cpp:66:6: warning: unused variable 'pr' [-Wunused-variable]
int pr = n;
^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
392 KB |
Output is correct |
| 2 |
Correct |
5 ms |
376 KB |
Output is correct |
| 3 |
Correct |
8 ms |
248 KB |
Output is correct |
| 4 |
Correct |
8 ms |
376 KB |
Output is correct |
| 5 |
Correct |
6 ms |
304 KB |
Output is correct |
| 6 |
Correct |
4 ms |
376 KB |
Output is correct |
| 7 |
Correct |
4 ms |
372 KB |
Output is correct |
| 8 |
Correct |
4 ms |
312 KB |
Output is correct |
| 9 |
Correct |
7 ms |
248 KB |
Output is correct |
| 10 |
Correct |
5 ms |
248 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
420 KB |
Output is correct |
| 2 |
Correct |
7 ms |
504 KB |
Output is correct |
| 3 |
Correct |
7 ms |
248 KB |
Output is correct |
| 4 |
Correct |
4 ms |
392 KB |
Output is correct |
| 5 |
Correct |
7 ms |
248 KB |
Output is correct |
| 6 |
Correct |
7 ms |
376 KB |
Output is correct |
| 7 |
Correct |
4 ms |
376 KB |
Output is correct |
| 8 |
Correct |
7 ms |
248 KB |
Output is correct |
| 9 |
Correct |
4 ms |
376 KB |
Output is correct |
| 10 |
Correct |
4 ms |
392 KB |
Output is correct |
| 11 |
Correct |
7 ms |
376 KB |
Output is correct |
| 12 |
Correct |
7 ms |
392 KB |
Output is correct |
| 13 |
Correct |
4 ms |
392 KB |
Output is correct |
| 14 |
Correct |
8 ms |
376 KB |
Output is correct |
| 15 |
Correct |
22 ms |
312 KB |
Output is correct |
| 16 |
Correct |
12 ms |
248 KB |
Output is correct |
| 17 |
Correct |
35 ms |
504 KB |
Output is correct |
| 18 |
Correct |
4 ms |
312 KB |
Output is correct |
| 19 |
Correct |
53 ms |
248 KB |
Output is correct |
| 20 |
Correct |
13 ms |
504 KB |
Output is correct |
| 21 |
Correct |
18 ms |
392 KB |
Output is correct |
| 22 |
Correct |
32 ms |
308 KB |
Output is correct |
| 23 |
Correct |
7 ms |
304 KB |
Output is correct |
| 24 |
Correct |
11 ms |
248 KB |
Output is correct |
| 25 |
Correct |
22 ms |
248 KB |
Output is correct |
| 26 |
Correct |
13 ms |
504 KB |
Output is correct |
| 27 |
Correct |
7 ms |
248 KB |
Output is correct |
| 28 |
Correct |
9 ms |
304 KB |
Output is correct |
| 29 |
Correct |
9 ms |
248 KB |
Output is correct |
| 30 |
Correct |
4 ms |
308 KB |
Output is correct |
| 31 |
Correct |
34 ms |
252 KB |
Output is correct |
| 32 |
Correct |
7 ms |
380 KB |
Output is correct |
| 33 |
Correct |
2 ms |
248 KB |
Output is correct |
| 34 |
Correct |
32 ms |
248 KB |
Output is correct |
| 35 |
Correct |
8 ms |
308 KB |
Output is correct |
| 36 |
Correct |
36 ms |
376 KB |
Output is correct |
| 37 |
Correct |
8 ms |
248 KB |
Output is correct |
| 38 |
Correct |
8 ms |
396 KB |
Output is correct |
| 39 |
Correct |
29 ms |
252 KB |
Output is correct |
| 40 |
Correct |
7 ms |
304 KB |
Output is correct |
| 41 |
Correct |
30 ms |
376 KB |
Output is correct |
| 42 |
Correct |
13 ms |
376 KB |
Output is correct |
| 43 |
Correct |
28 ms |
376 KB |
Output is correct |
| 44 |
Correct |
37 ms |
248 KB |
Output is correct |
| 45 |
Correct |
30 ms |
248 KB |
Output is correct |
| 46 |
Correct |
26 ms |
376 KB |
Output is correct |
| 47 |
Correct |
23 ms |
248 KB |
Output is correct |
| 48 |
Correct |
19 ms |
248 KB |
Output is correct |
| 49 |
Correct |
24 ms |
376 KB |
Output is correct |
| 50 |
Correct |
8 ms |
248 KB |
Output is correct |
| 51 |
Correct |
29 ms |
248 KB |
Output is correct |
| 52 |
Correct |
26 ms |
376 KB |
Output is correct |
| 53 |
Correct |
7 ms |
248 KB |
Output is correct |
| 54 |
Correct |
31 ms |
248 KB |
Output is correct |
| 55 |
Correct |
35 ms |
308 KB |
Output is correct |
| 56 |
Correct |
7 ms |
376 KB |
Output is correct |
| 57 |
Correct |
21 ms |
248 KB |
Output is correct |
| 58 |
Correct |
25 ms |
248 KB |
Output is correct |
| 59 |
Correct |
26 ms |
248 KB |
Output is correct |
| 60 |
Correct |
24 ms |
392 KB |
Output is correct |
| 61 |
Correct |
7 ms |
248 KB |
Output is correct |
| 62 |
Correct |
7 ms |
248 KB |
Output is correct |
| 63 |
Correct |
7 ms |
312 KB |
Output is correct |
| 64 |
Correct |
7 ms |
248 KB |
Output is correct |
| 65 |
Correct |
4 ms |
376 KB |
Output is correct |
| 66 |
Correct |
10 ms |
248 KB |
Output is correct |
| 67 |
Correct |
5 ms |
400 KB |
Output is correct |
| 68 |
Correct |
6 ms |
504 KB |
Output is correct |
| 69 |
Correct |
12 ms |
392 KB |
Output is correct |
| 70 |
Correct |
8 ms |
376 KB |
Output is correct |
| 71 |
Partially correct |
66 ms |
248 KB |
Partially correct - number of queries: 5231 |
| 72 |
Correct |
6 ms |
392 KB |
Output is correct |
| 73 |
Partially correct |
46 ms |
248 KB |
Partially correct - number of queries: 5168 |
| 74 |
Partially correct |
50 ms |
248 KB |
Partially correct - number of queries: 5195 |
| 75 |
Correct |
5 ms |
308 KB |
Output is correct |
| 76 |
Correct |
53 ms |
376 KB |
Output is correct |
| 77 |
Correct |
42 ms |
248 KB |
Output is correct |
| 78 |
Correct |
9 ms |
248 KB |
Output is correct |
| 79 |
Correct |
15 ms |
396 KB |
Output is correct |
| 80 |
Correct |
50 ms |
376 KB |
Output is correct |
| 81 |
Correct |
50 ms |
248 KB |
Output is correct |
| 82 |
Correct |
27 ms |
376 KB |
Output is correct |
| 83 |
Correct |
8 ms |
248 KB |
Output is correct |
| 84 |
Correct |
44 ms |
248 KB |
Output is correct |
| 85 |
Correct |
54 ms |
248 KB |
Output is correct |
| 86 |
Correct |
8 ms |
248 KB |
Output is correct |
| 87 |
Correct |
7 ms |
396 KB |
Output is correct |
| 88 |
Correct |
7 ms |
248 KB |
Output is correct |
| 89 |
Correct |
6 ms |
248 KB |
Output is correct |
| 90 |
Correct |
4 ms |
376 KB |
Output is correct |
| 91 |
Correct |
4 ms |
312 KB |
Output is correct |
| 92 |
Correct |
7 ms |
252 KB |
Output is correct |
| 93 |
Correct |
12 ms |
376 KB |
Output is correct |
| 94 |
Correct |
10 ms |
248 KB |
Output is correct |
| 95 |
Correct |
17 ms |
248 KB |
Output is correct |
| 96 |
Correct |
12 ms |
248 KB |
Output is correct |
| 97 |
Correct |
8 ms |
248 KB |
Output is correct |
