#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ii pair<int,int>
#define fi first
#define se second
#define rep(x,s,e) for (auto x=(s)-((s)>(e));x!=(e)-((s)>(e));((s)<(e)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int) (x).size()
mt19937 rng(42069);
const int CHECK=447;
ii memo[200005];
ii get(int i){
if (memo[i]!=ii(-1,-1)) return memo[i];
auto temp=ask(i);
return memo[i]=ii(temp[0],temp[1]);
}
int mx;
vector<int> good;
void dnc(int l,int r,int i,int j){
//rep(x,0,100000000) ;
//cout<<l<<" "<<r<<" "<<i<<" "<<j<<endl;
if (r<l) return;
if (i==j) return;
int m=l+r>>1;
int m2=m;
while (m2<=r && get(m2).fi+get(m2).se!=mx){
good.push_back(m2);
m2++;
}
if (m2>r) dnc(l,m-1,i,j-(m2-m));
else{
auto temp=get(m2);
dnc(l,m-1,i,temp.fi-(m2-m));
dnc(m2+1,r,temp.fi,j);
}
}
int find_best(int n) {
memset(memo,-1,sizeof(memo));
vector<int> pos;
rep(x,0,n) pos.push_back(x);
rep(x,0,n) swap(pos[x],pos[rng()%(x+1)]);
rep(x,0,min(n,CHECK)){
auto temp=get(pos[x]);
mx=max(mx,temp.fi+temp.se);
}
dnc(0,n-1,0,mx);
//for (auto &it:good) cout<<it<<" "; cout<<endl;
for (auto &it:good){
if (get(it)==ii(0,0)) return it;
}
return -1;
}
Compilation message
prize.cpp: In function 'void dnc(int, int, int, int)':
prize.cpp:37:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
37 | int m=l+r>>1;
| ~^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 2 |
Correct |
11 ms |
3064 KB |
Output is correct |
| 3 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 4 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 5 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 6 |
Correct |
13 ms |
3192 KB |
Output is correct |
| 7 |
Correct |
11 ms |
3064 KB |
Output is correct |
| 8 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 9 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 10 |
Correct |
12 ms |
3064 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 2 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 3 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 4 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 5 |
Correct |
11 ms |
3192 KB |
Output is correct |
| 6 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 7 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 8 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 9 |
Correct |
12 ms |
3192 KB |
Output is correct |
| 10 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 11 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 12 |
Correct |
15 ms |
3064 KB |
Output is correct |
| 13 |
Correct |
14 ms |
3064 KB |
Output is correct |
| 14 |
Correct |
16 ms |
2048 KB |
Output is correct |
| 15 |
Correct |
53 ms |
3064 KB |
Output is correct |
| 16 |
Correct |
42 ms |
3064 KB |
Output is correct |
| 17 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 18 |
Correct |
45 ms |
3064 KB |
Output is correct |
| 19 |
Correct |
38 ms |
3064 KB |
Output is correct |
| 20 |
Correct |
31 ms |
2556 KB |
Output is correct |
| 21 |
Correct |
52 ms |
3064 KB |
Output is correct |
| 22 |
Correct |
44 ms |
3064 KB |
Output is correct |
| 23 |
Correct |
14 ms |
3064 KB |
Output is correct |
| 24 |
Correct |
16 ms |
3064 KB |
Output is correct |
| 25 |
Correct |
51 ms |
3064 KB |
Output is correct |
| 26 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 27 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 28 |
Correct |
40 ms |
3064 KB |
Output is correct |
| 29 |
Correct |
45 ms |
3064 KB |
Output is correct |
| 30 |
Correct |
59 ms |
3064 KB |
Output is correct |
| 31 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 32 |
Correct |
17 ms |
3064 KB |
Output is correct |
| 33 |
Correct |
2 ms |
1920 KB |
Output is correct |
| 34 |
Correct |
45 ms |
3064 KB |
Output is correct |
| 35 |
Correct |
14 ms |
3064 KB |
Output is correct |
| 36 |
Correct |
52 ms |
3064 KB |
Output is correct |
| 37 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 38 |
Correct |
10 ms |
3064 KB |
Output is correct |
| 39 |
Correct |
54 ms |
3064 KB |
Output is correct |
| 40 |
Correct |
49 ms |
3064 KB |
Output is correct |
| 41 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 42 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 43 |
Correct |
49 ms |
3064 KB |
Output is correct |
| 44 |
Correct |
58 ms |
3064 KB |
Output is correct |
| 45 |
Correct |
44 ms |
3192 KB |
Output is correct |
| 46 |
Correct |
43 ms |
3192 KB |
Output is correct |
| 47 |
Correct |
50 ms |
3064 KB |
Output is correct |
| 48 |
Correct |
45 ms |
3064 KB |
Output is correct |
| 49 |
Correct |
55 ms |
3064 KB |
Output is correct |
| 50 |
Correct |
59 ms |
3064 KB |
Output is correct |
| 51 |
Correct |
51 ms |
3064 KB |
Output is correct |
| 52 |
Correct |
50 ms |
3064 KB |
Output is correct |
| 53 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 54 |
Correct |
51 ms |
3064 KB |
Output is correct |
| 55 |
Correct |
32 ms |
3064 KB |
Output is correct |
| 56 |
Correct |
32 ms |
3064 KB |
Output is correct |
| 57 |
Correct |
43 ms |
3064 KB |
Output is correct |
| 58 |
Correct |
55 ms |
3064 KB |
Output is correct |
| 59 |
Correct |
50 ms |
3064 KB |
Output is correct |
| 60 |
Correct |
57 ms |
3064 KB |
Output is correct |
| 61 |
Correct |
12 ms |
3192 KB |
Output is correct |
| 62 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 63 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 64 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 65 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 66 |
Correct |
12 ms |
3096 KB |
Output is correct |
| 67 |
Correct |
14 ms |
3064 KB |
Output is correct |
| 68 |
Correct |
15 ms |
3064 KB |
Output is correct |
| 69 |
Correct |
16 ms |
3064 KB |
Output is correct |
| 70 |
Correct |
14 ms |
3064 KB |
Output is correct |
| 71 |
Partially correct |
36 ms |
3064 KB |
Partially correct - number of queries: 5188 |
| 72 |
Correct |
15 ms |
3064 KB |
Output is correct |
| 73 |
Partially correct |
50 ms |
3064 KB |
Partially correct - number of queries: 5127 |
| 74 |
Partially correct |
55 ms |
3064 KB |
Partially correct - number of queries: 5154 |
| 75 |
Correct |
13 ms |
3064 KB |
Output is correct |
| 76 |
Correct |
49 ms |
3064 KB |
Output is correct |
| 77 |
Correct |
58 ms |
3064 KB |
Output is correct |
| 78 |
Correct |
16 ms |
3064 KB |
Output is correct |
| 79 |
Correct |
35 ms |
3064 KB |
Output is correct |
| 80 |
Correct |
54 ms |
3064 KB |
Output is correct |
| 81 |
Correct |
53 ms |
3064 KB |
Output is correct |
| 82 |
Correct |
36 ms |
3064 KB |
Output is correct |
| 83 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 84 |
Correct |
47 ms |
3064 KB |
Output is correct |
| 85 |
Correct |
55 ms |
3064 KB |
Output is correct |
| 86 |
Correct |
40 ms |
3064 KB |
Output is correct |
| 87 |
Correct |
15 ms |
3064 KB |
Output is correct |
| 88 |
Correct |
38 ms |
3064 KB |
Output is correct |
| 89 |
Correct |
48 ms |
3064 KB |
Output is correct |
| 90 |
Correct |
12 ms |
3064 KB |
Output is correct |
| 91 |
Correct |
32 ms |
3064 KB |
Output is correct |
| 92 |
Correct |
38 ms |
3064 KB |
Output is correct |
| 93 |
Correct |
46 ms |
3064 KB |
Output is correct |
| 94 |
Correct |
43 ms |
3064 KB |
Output is correct |
| 95 |
Correct |
42 ms |
3064 KB |
Output is correct |
| 96 |
Correct |
42 ms |
3064 KB |
Output is correct |
| 97 |
Correct |
44 ms |
3064 KB |
Output is correct |
