#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 3e5+7;
vector<int> ans[N];
int rs=-1;
vector<int> get(int x){
if(ans[x].size()==0){
ans[x]=ask(x);
if(ans[x][0]==0&&ans[x][1]==0){
rs=x;
}
// cout<<x<<" "<<ans[x][0]<<" "<<ans[x][1]<<endl;
}
return ans[x];
}
void fnd(int l,int r){
if(rs!=-1)return;
if(l==r){
get(l);
return;
}
if(l+1==r){
return;
}
int m=(l+r)/2;
vector<int> lres=get(l);
if(rs!=-1)return;
vector<int> rres=get(r);
if(rs!=-1)return;
if(lres[0]==rres[0]&&lres[1]==rres[1])return;
if(lres[1]==0||rres[0]==0)return;
vector<int> md=get(m);
if(rs!=-1)return;
if(rand()&1){
if(md[0]!=0)fnd(l,m);
if(rs!=-1)return;
if(md[1]!=0)fnd(m,r);
}
else{
if(md[1]!=0)fnd(m,r);
if(rs!=-1)return;
if(md[0]!=0)fnd(l,m);
}
}
int find_best(int n) {
srand(6451719);
fnd(0,n-1);
return rs;
int i;
for(i = 0; i < n; i++) {
std::vector<int> res = get(i);
// cout<<i<<" ok "<<res[0]<<" "<<res[1]<<endl;
if(res[0] + res[1] == 0)
return i;
int cur=i;
int brd=20;
if(res[0]+res[1]<n/2)brd=3;
else brd=20;
for(int j=brd;j>=0;j--){
int rg=cur;
rg+=1<<j;
if(rg<n){
vector<int> cres=get(rg);
// cout<<rg<<" "<<cur<<" "<<j<<" ok "<<cres[0]<<" "<<cres[1]<<endl;
if(cres[0]+cres[1]==0)return rg;
if(res[0]==cres[0]&&res[1]==cres[1]){
cur=rg;
continue;
}
if(cres[0]==0){
cur=rg;
continue;
}
}
}
i=cur;
}
return n-1;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
7288 KB |
Output is correct |
| 2 |
Correct |
9 ms |
7520 KB |
Output is correct |
| 3 |
Correct |
9 ms |
7520 KB |
Output is correct |
| 4 |
Correct |
8 ms |
7520 KB |
Output is correct |
| 5 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 6 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 7 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 8 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 9 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 10 |
Correct |
9 ms |
7636 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 2 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 3 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 4 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 5 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 6 |
Correct |
8 ms |
7636 KB |
Output is correct |
| 7 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 8 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 9 |
Correct |
10 ms |
7636 KB |
Output is correct |
| 10 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 11 |
Correct |
14 ms |
7636 KB |
Output is correct |
| 12 |
Correct |
14 ms |
7636 KB |
Output is correct |
| 13 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 14 |
Correct |
14 ms |
7636 KB |
Output is correct |
| 15 |
Correct |
38 ms |
7636 KB |
Output is correct |
| 16 |
Correct |
9 ms |
7636 KB |
Output is correct |
| 17 |
Correct |
48 ms |
7724 KB |
Output is correct |
| 18 |
Correct |
18 ms |
7724 KB |
Output is correct |
| 19 |
Correct |
49 ms |
7724 KB |
Output is correct |
| 20 |
Correct |
26 ms |
7724 KB |
Output is correct |
| 21 |
Correct |
47 ms |
7724 KB |
Output is correct |
| 22 |
Correct |
25 ms |
7724 KB |
Output is correct |
| 23 |
Correct |
9 ms |
7724 KB |
Output is correct |
| 24 |
Correct |
12 ms |
7724 KB |
Output is correct |
| 25 |
Correct |
21 ms |
7724 KB |
Output is correct |
| 26 |
Correct |
26 ms |
7724 KB |
Output is correct |
| 27 |
Correct |
9 ms |
7724 KB |
Output is correct |
| 28 |
Correct |
14 ms |
7724 KB |
Output is correct |
| 29 |
Correct |
8 ms |
7724 KB |
Output is correct |
| 30 |
Correct |
17 ms |
7724 KB |
Output is correct |
| 31 |
Correct |
30 ms |
7724 KB |
Output is correct |
| 32 |
Correct |
10 ms |
7724 KB |
Output is correct |
| 33 |
Correct |
8 ms |
7724 KB |
Output is correct |
| 34 |
Correct |
38 ms |
7820 KB |
Output is correct |
| 35 |
Correct |
9 ms |
7820 KB |
Output is correct |
| 36 |
Correct |
52 ms |
7820 KB |
Output is correct |
| 37 |
Correct |
11 ms |
7820 KB |
Output is correct |
| 38 |
Correct |
9 ms |
7820 KB |
Output is correct |
| 39 |
Correct |
53 ms |
7820 KB |
Output is correct |
| 40 |
Correct |
18 ms |
7820 KB |
Output is correct |
| 41 |
Correct |
26 ms |
7820 KB |
Output is correct |
| 42 |
Correct |
26 ms |
7820 KB |
Output is correct |
| 43 |
Correct |
45 ms |
7820 KB |
Output is correct |
| 44 |
Correct |
34 ms |
7820 KB |
Output is correct |
| 45 |
Correct |
21 ms |
7820 KB |
Output is correct |
| 46 |
Correct |
37 ms |
7820 KB |
Output is correct |
| 47 |
Correct |
40 ms |
7820 KB |
Output is correct |
| 48 |
Correct |
23 ms |
7820 KB |
Output is correct |
| 49 |
Correct |
43 ms |
7820 KB |
Output is correct |
| 50 |
Correct |
19 ms |
7820 KB |
Output is correct |
| 51 |
Correct |
36 ms |
7840 KB |
Output is correct |
| 52 |
Correct |
49 ms |
7840 KB |
Output is correct |
| 53 |
Correct |
8 ms |
7840 KB |
Output is correct |
| 54 |
Correct |
36 ms |
7840 KB |
Output is correct |
| 55 |
Correct |
48 ms |
7840 KB |
Output is correct |
| 56 |
Correct |
19 ms |
7840 KB |
Output is correct |
| 57 |
Correct |
21 ms |
7840 KB |
Output is correct |
| 58 |
Correct |
29 ms |
7840 KB |
Output is correct |
| 59 |
Correct |
16 ms |
7840 KB |
Output is correct |
| 60 |
Correct |
20 ms |
7840 KB |
Output is correct |
| 61 |
Correct |
10 ms |
7840 KB |
Output is correct |
| 62 |
Correct |
13 ms |
7840 KB |
Output is correct |
| 63 |
Correct |
11 ms |
7840 KB |
Output is correct |
| 64 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 65 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 66 |
Correct |
7 ms |
7840 KB |
Output is correct |
| 67 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 68 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 69 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 70 |
Correct |
9 ms |
7840 KB |
Output is correct |
| 71 |
Correct |
50 ms |
7840 KB |
Output is correct |
| 72 |
Correct |
13 ms |
7840 KB |
Output is correct |
| 73 |
Correct |
44 ms |
7840 KB |
Output is correct |
| 74 |
Correct |
46 ms |
7840 KB |
Output is correct |
| 75 |
Correct |
8 ms |
7840 KB |
Output is correct |
| 76 |
Correct |
35 ms |
7840 KB |
Output is correct |
| 77 |
Partially correct |
48 ms |
7840 KB |
Partially correct - number of queries: 5030 |
| 78 |
Correct |
12 ms |
7840 KB |
Output is correct |
| 79 |
Correct |
28 ms |
7840 KB |
Output is correct |
| 80 |
Partially correct |
34 ms |
7868 KB |
Partially correct - number of queries: 5182 |
| 81 |
Partially correct |
32 ms |
7868 KB |
Partially correct - number of queries: 5162 |
| 82 |
Partially correct |
40 ms |
7868 KB |
Partially correct - number of queries: 5137 |
| 83 |
Correct |
9 ms |
7868 KB |
Output is correct |
| 84 |
Correct |
42 ms |
7868 KB |
Output is correct |
| 85 |
Partially correct |
47 ms |
7868 KB |
Partially correct - number of queries: 5210 |
| 86 |
Correct |
14 ms |
7868 KB |
Output is correct |
| 87 |
Correct |
10 ms |
7868 KB |
Output is correct |
| 88 |
Correct |
12 ms |
7868 KB |
Output is correct |
| 89 |
Correct |
12 ms |
7868 KB |
Output is correct |
| 90 |
Correct |
9 ms |
7868 KB |
Output is correct |
| 91 |
Correct |
11 ms |
7868 KB |
Output is correct |
| 92 |
Correct |
8 ms |
7868 KB |
Output is correct |
| 93 |
Correct |
10 ms |
7868 KB |
Output is correct |
| 94 |
Correct |
9 ms |
7868 KB |
Output is correct |
| 95 |
Correct |
16 ms |
7868 KB |
Output is correct |
| 96 |
Correct |
11 ms |
7868 KB |
Output is correct |
| 97 |
Correct |
8 ms |
7868 KB |
Output is correct |
