#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
int fenwick[300000]{0}, N;
int sum(int x){
int s = 0;
for(; x>0; x-=(x&-x))
s+=fenwick[x];
return s;
}
int query(int a, int b){return sum(b)-sum(a-1);}
void update(int x, int v){
for(; x <= N; x+=(x&-x))
fenwick[x]+=v;
}
map<int, vector<int>> M;
vector<int> Ask(int x){
if(M.count(x)) return M[x];
return M[x] = ask(x);
}
int find_best(int n) {
N=n; int l = -1, r = n-1;
for(int i = 0; i < 500; i++){
l++, r = n-1;
while(l+1<r){
int mid = (l+r)/2;
auto x = Ask(mid);
if(x[0]+x[1]==0) return mid;
if(x[0]!=query(0,mid-1)) r=mid-1;
else l = mid+1;
}
auto x = Ask(l), y = Ask(r);
if(x[0]+x[1]==0) return l;
if(y[0]+y[1]==0) return r;
if(y[0]!=query(0,r-1)) update(l,1);
else update(r,1);
}
}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
42 | }
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
296 KB |
Output is correct |
| 2 |
Correct |
1 ms |
336 KB |
Output is correct |
| 3 |
Correct |
1 ms |
300 KB |
Output is correct |
| 4 |
Correct |
1 ms |
208 KB |
Output is correct |
| 5 |
Correct |
1 ms |
208 KB |
Output is correct |
| 6 |
Correct |
1 ms |
336 KB |
Output is correct |
| 7 |
Correct |
1 ms |
300 KB |
Output is correct |
| 8 |
Correct |
1 ms |
300 KB |
Output is correct |
| 9 |
Correct |
1 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
304 KB |
Output is correct |
| 2 |
Correct |
1 ms |
296 KB |
Output is correct |
| 3 |
Correct |
0 ms |
296 KB |
Output is correct |
| 4 |
Correct |
1 ms |
300 KB |
Output is correct |
| 5 |
Correct |
1 ms |
300 KB |
Output is correct |
| 6 |
Correct |
1 ms |
292 KB |
Output is correct |
| 7 |
Correct |
1 ms |
296 KB |
Output is correct |
| 8 |
Correct |
1 ms |
280 KB |
Output is correct |
| 9 |
Correct |
1 ms |
304 KB |
Output is correct |
| 10 |
Correct |
1 ms |
208 KB |
Output is correct |
| 11 |
Correct |
2 ms |
456 KB |
Output is correct |
| 12 |
Correct |
1 ms |
208 KB |
Output is correct |
| 13 |
Correct |
3 ms |
680 KB |
Output is correct |
| 14 |
Correct |
3 ms |
428 KB |
Output is correct |
| 15 |
Correct |
8 ms |
428 KB |
Output is correct |
| 16 |
Partially correct |
59 ms |
1572 KB |
Partially correct - number of queries: 6557 |
| 17 |
Correct |
1 ms |
208 KB |
Output is correct |
| 18 |
Partially correct |
53 ms |
1848 KB |
Partially correct - number of queries: 7690 |
| 19 |
Correct |
1 ms |
296 KB |
Output is correct |
| 20 |
Correct |
17 ms |
568 KB |
Output is correct |
| 21 |
Correct |
33 ms |
800 KB |
Output is correct |
| 22 |
Correct |
7 ms |
420 KB |
Output is correct |
| 23 |
Correct |
1 ms |
300 KB |
Output is correct |
| 24 |
Correct |
1 ms |
296 KB |
Output is correct |
| 25 |
Correct |
33 ms |
1184 KB |
Output is correct |
| 26 |
Correct |
31 ms |
1096 KB |
Output is correct |
| 27 |
Correct |
1 ms |
336 KB |
Output is correct |
| 28 |
Partially correct |
75 ms |
1748 KB |
Partially correct - number of queries: 7248 |
| 29 |
Partially correct |
58 ms |
1448 KB |
Partially correct - number of queries: 5514 |
| 30 |
Partially correct |
64 ms |
1848 KB |
Partially correct - number of queries: 7636 |
| 31 |
Correct |
0 ms |
208 KB |
Output is correct |
| 32 |
Correct |
5 ms |
548 KB |
Output is correct |
| 33 |
Correct |
0 ms |
208 KB |
Output is correct |
| 34 |
Correct |
24 ms |
788 KB |
Output is correct |
| 35 |
Correct |
2 ms |
292 KB |
Output is correct |
| 36 |
Correct |
23 ms |
660 KB |
Output is correct |
| 37 |
Correct |
1 ms |
280 KB |
Output is correct |
| 38 |
Correct |
1 ms |
296 KB |
Output is correct |
| 39 |
Correct |
30 ms |
980 KB |
Output is correct |
| 40 |
Partially correct |
55 ms |
1728 KB |
Partially correct - number of queries: 6530 |
| 41 |
Correct |
41 ms |
1188 KB |
Output is correct |
| 42 |
Correct |
21 ms |
1220 KB |
Output is correct |
| 43 |
Correct |
42 ms |
1056 KB |
Output is correct |
| 44 |
Correct |
29 ms |
856 KB |
Output is correct |
| 45 |
Correct |
26 ms |
972 KB |
Output is correct |
| 46 |
Correct |
1 ms |
276 KB |
Output is correct |
| 47 |
Correct |
29 ms |
968 KB |
Output is correct |
| 48 |
Partially correct |
61 ms |
1428 KB |
Partially correct - number of queries: 5708 |
| 49 |
Correct |
6 ms |
420 KB |
Output is correct |
| 50 |
Partially correct |
43 ms |
1884 KB |
Partially correct - number of queries: 7691 |
| 51 |
Correct |
38 ms |
928 KB |
Output is correct |
| 52 |
Correct |
1 ms |
288 KB |
Output is correct |
| 53 |
Correct |
2 ms |
320 KB |
Output is correct |
| 54 |
Correct |
38 ms |
912 KB |
Output is correct |
| 55 |
Correct |
1 ms |
208 KB |
Output is correct |
| 56 |
Partially correct |
47 ms |
1880 KB |
Partially correct - number of queries: 7686 |
| 57 |
Partially correct |
26 ms |
1444 KB |
Partially correct - number of queries: 5612 |
| 58 |
Partially correct |
30 ms |
1452 KB |
Partially correct - number of queries: 5698 |
| 59 |
Correct |
37 ms |
1216 KB |
Output is correct |
| 60 |
Correct |
44 ms |
1096 KB |
Output is correct |
| 61 |
Correct |
1 ms |
352 KB |
Output is correct |
| 62 |
Correct |
1 ms |
296 KB |
Output is correct |
| 63 |
Correct |
3 ms |
548 KB |
Output is correct |
| 64 |
Correct |
1 ms |
336 KB |
Output is correct |
| 65 |
Correct |
3 ms |
280 KB |
Output is correct |
| 66 |
Correct |
1 ms |
208 KB |
Output is correct |
| 67 |
Correct |
1 ms |
208 KB |
Output is correct |
| 68 |
Correct |
0 ms |
208 KB |
Output is correct |
| 69 |
Correct |
1 ms |
300 KB |
Output is correct |
| 70 |
Correct |
1 ms |
304 KB |
Output is correct |
| 71 |
Partially correct |
89 ms |
1876 KB |
Partially correct - number of queries: 7790 |
| 72 |
Correct |
6 ms |
592 KB |
Output is correct |
| 73 |
Partially correct |
47 ms |
1804 KB |
Partially correct - number of queries: 7668 |
| 74 |
Partially correct |
82 ms |
1780 KB |
Partially correct - number of queries: 7710 |
| 75 |
Correct |
3 ms |
336 KB |
Output is correct |
| 76 |
Partially correct |
55 ms |
1840 KB |
Partially correct - number of queries: 6625 |
| 77 |
Partially correct |
56 ms |
1796 KB |
Partially correct - number of queries: 7730 |
| 78 |
Correct |
7 ms |
684 KB |
Output is correct |
| 79 |
Correct |
36 ms |
1400 KB |
Output is correct |
| 80 |
Partially correct |
39 ms |
1884 KB |
Partially correct - number of queries: 7751 |
| 81 |
Partially correct |
48 ms |
1836 KB |
Partially correct - number of queries: 7710 |
| 82 |
Partially correct |
56 ms |
1900 KB |
Partially correct - number of queries: 7668 |
| 83 |
Correct |
2 ms |
432 KB |
Output is correct |
| 84 |
Partially correct |
58 ms |
1692 KB |
Partially correct - number of queries: 6344 |
| 85 |
Partially correct |
79 ms |
1944 KB |
Partially correct - number of queries: 7733 |
| 86 |
Correct |
14 ms |
628 KB |
Output is correct |
| 87 |
Correct |
3 ms |
472 KB |
Output is correct |
| 88 |
Correct |
6 ms |
600 KB |
Output is correct |
| 89 |
Correct |
9 ms |
592 KB |
Output is correct |
| 90 |
Correct |
2 ms |
336 KB |
Output is correct |
| 91 |
Correct |
11 ms |
464 KB |
Output is correct |
| 92 |
Correct |
7 ms |
360 KB |
Output is correct |
| 93 |
Correct |
5 ms |
464 KB |
Output is correct |
| 94 |
Correct |
4 ms |
464 KB |
Output is correct |
| 95 |
Correct |
4 ms |
548 KB |
Output is correct |
| 96 |
Correct |
5 ms |
592 KB |
Output is correct |
| 97 |
Correct |
1 ms |
208 KB |
Output is correct |
