#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define ll int
#define endl "\n"
#define sz(x) (ll)x.size()
#define F first
#define S second
#define pb push_back
typedef vector <ll> vi;
typedef pair <ll,ll> ii;
typedef vector <ii> vii;
#define dbg(x) cout<<#x<<": "<<x<<endl;
#define dbg2(x,y) cout<<#x<<": "<<x<<" "<<#y<<": "<<y<<endl;
#define dbg3(x,y,z) cout<<#x<<": "<<x<<" "<<#y<<": "<<y<<" "<<#z<<": "<<z<<endl;
void printVct(vi &v){
for (ll i =0; i<sz(v); i++){
cout<<v[i]<<" ";
}
cout<<endl;
}
ll common_val = 0;
ll ans = -1;
void query(ll q, vi &v, ll &s){
v = ask(q);
s = v[0] + v[1];
if (s == 0){
ans = q;
}
}
void bs(ll l, ll r, ll x, ll belowL, ll aboveR){
if (x == 0) return;
if (l > r) return;
if (ans != -1) return;
ll mid = (l+r)/2;
vi v; ll s;
query(mid, v, s);
if (s != common_val){
ll l_mid = mid-1;
ll c = 1;
while (l_mid >= l && s != common_val){
query(l_mid, v, s);
if (s == common_val) break;
l_mid--;
c++;
}
if (l_mid < l){
ll val_r = x - c;
bs(mid+1,r,val_r,c,aboveR);
}
else{
ll val_l = v[0] - belowL;
ll val_r = v[1] - aboveR - c;
bs(l,mid-1,val_l,belowL,v[1]);
bs(mid+1,r,val_r,v[0]+c,aboveR);
}
}
ll val_l = v[0] - belowL;
ll val_r = v[1] - aboveR;
//hit on a common val:
bs(l,mid-1,val_l,belowL,v[1]);
bs(mid+1,r,val_r,v[0],aboveR);
}
int find_best(int n) {
//n < 5000: BF - linear search
if (n <= 5000){
for (ll i =0; i<n; i++){
vi v = ask(i);
ll s = v[0] + v[1];
if (s == 0){
return i;
}
}
}
//step 1: Find common value
for (ll i =0; i<475; i++){
vi v = ask(i);
ll s = v[0] + v[1];
common_val = max(common_val, s);
if (s == 0){
return i;
}
}
// common_val = 4;
//identify all uncommon one by one
//start from pos = 0, and move like binary lifting
bs(0, n-1, common_val, 0, 0);
return ans;
}
/*
6
1 2 2 2 2 2
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
344 KB |
Output is correct |
| 2 |
Correct |
3 ms |
344 KB |
Output is correct |
| 3 |
Correct |
2 ms |
344 KB |
Output is correct |
| 4 |
Correct |
3 ms |
428 KB |
Output is correct |
| 5 |
Correct |
2 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
2 ms |
344 KB |
Output is correct |
| 8 |
Correct |
2 ms |
344 KB |
Output is correct |
| 9 |
Correct |
2 ms |
344 KB |
Output is correct |
| 10 |
Correct |
2 ms |
344 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
344 KB |
Output is correct |
| 2 |
Correct |
2 ms |
344 KB |
Output is correct |
| 3 |
Correct |
2 ms |
344 KB |
Output is correct |
| 4 |
Correct |
2 ms |
344 KB |
Output is correct |
| 5 |
Correct |
2 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
4 ms |
344 KB |
Output is correct |
| 8 |
Correct |
2 ms |
344 KB |
Output is correct |
| 9 |
Correct |
3 ms |
344 KB |
Output is correct |
| 10 |
Correct |
2 ms |
344 KB |
Output is correct |
| 11 |
Correct |
3 ms |
344 KB |
Output is correct |
| 12 |
Correct |
3 ms |
344 KB |
Output is correct |
| 13 |
Correct |
4 ms |
344 KB |
Output is correct |
| 14 |
Correct |
3 ms |
344 KB |
Output is correct |
| 15 |
Correct |
5 ms |
344 KB |
Output is correct |
| 16 |
Correct |
25 ms |
344 KB |
Output is correct |
| 17 |
Correct |
2 ms |
344 KB |
Output is correct |
| 18 |
Partially correct |
25 ms |
436 KB |
Partially correct - number of queries: 5412 |
| 19 |
Correct |
2 ms |
344 KB |
Output is correct |
| 20 |
Correct |
7 ms |
344 KB |
Output is correct |
| 21 |
Correct |
9 ms |
344 KB |
Output is correct |
| 22 |
Correct |
4 ms |
344 KB |
Output is correct |
| 23 |
Correct |
2 ms |
344 KB |
Output is correct |
| 24 |
Correct |
2 ms |
344 KB |
Output is correct |
| 25 |
Correct |
12 ms |
344 KB |
Output is correct |
| 26 |
Correct |
9 ms |
600 KB |
Output is correct |
| 27 |
Correct |
3 ms |
344 KB |
Output is correct |
| 28 |
Correct |
12 ms |
344 KB |
Output is correct |
| 29 |
Correct |
13 ms |
344 KB |
Output is correct |
| 30 |
Partially correct |
31 ms |
344 KB |
Partially correct - number of queries: 5213 |
| 31 |
Correct |
2 ms |
344 KB |
Output is correct |
| 32 |
Correct |
3 ms |
344 KB |
Output is correct |
| 33 |
Correct |
0 ms |
344 KB |
Output is correct |
| 34 |
Correct |
10 ms |
428 KB |
Output is correct |
| 35 |
Correct |
3 ms |
344 KB |
Output is correct |
| 36 |
Correct |
7 ms |
344 KB |
Output is correct |
| 37 |
Correct |
3 ms |
344 KB |
Output is correct |
| 38 |
Correct |
4 ms |
344 KB |
Output is correct |
| 39 |
Correct |
12 ms |
344 KB |
Output is correct |
| 40 |
Correct |
19 ms |
344 KB |
Output is correct |
| 41 |
Correct |
12 ms |
344 KB |
Output is correct |
| 42 |
Correct |
11 ms |
344 KB |
Output is correct |
| 43 |
Correct |
13 ms |
344 KB |
Output is correct |
| 44 |
Correct |
10 ms |
344 KB |
Output is correct |
| 45 |
Correct |
9 ms |
344 KB |
Output is correct |
| 46 |
Correct |
2 ms |
344 KB |
Output is correct |
| 47 |
Correct |
11 ms |
344 KB |
Output is correct |
| 48 |
Correct |
24 ms |
344 KB |
Output is correct |
| 49 |
Correct |
4 ms |
344 KB |
Output is correct |
| 50 |
Partially correct |
25 ms |
344 KB |
Partially correct - number of queries: 5272 |
| 51 |
Correct |
10 ms |
344 KB |
Output is correct |
| 52 |
Correct |
3 ms |
344 KB |
Output is correct |
| 53 |
Correct |
4 ms |
344 KB |
Output is correct |
| 54 |
Correct |
8 ms |
344 KB |
Output is correct |
| 55 |
Correct |
2 ms |
344 KB |
Output is correct |
| 56 |
Partially correct |
18 ms |
424 KB |
Partially correct - number of queries: 5249 |
| 57 |
Correct |
20 ms |
344 KB |
Output is correct |
| 58 |
Correct |
13 ms |
344 KB |
Output is correct |
| 59 |
Correct |
12 ms |
344 KB |
Output is correct |
| 60 |
Correct |
10 ms |
344 KB |
Output is correct |
| 61 |
Correct |
3 ms |
344 KB |
Output is correct |
| 62 |
Correct |
2 ms |
344 KB |
Output is correct |
| 63 |
Correct |
2 ms |
596 KB |
Output is correct |
| 64 |
Correct |
3 ms |
344 KB |
Output is correct |
| 65 |
Correct |
3 ms |
428 KB |
Output is correct |
| 66 |
Correct |
4 ms |
344 KB |
Output is correct |
| 67 |
Correct |
2 ms |
344 KB |
Output is correct |
| 68 |
Correct |
3 ms |
344 KB |
Output is correct |
| 69 |
Correct |
4 ms |
344 KB |
Output is correct |
| 70 |
Correct |
3 ms |
344 KB |
Output is correct |
| 71 |
Partially correct |
23 ms |
344 KB |
Partially correct - number of queries: 5234 |
| 72 |
Correct |
3 ms |
344 KB |
Output is correct |
| 73 |
Partially correct |
19 ms |
344 KB |
Partially correct - number of queries: 5171 |
| 74 |
Partially correct |
28 ms |
344 KB |
Partially correct - number of queries: 5198 |
| 75 |
Correct |
2 ms |
344 KB |
Output is correct |
| 76 |
Correct |
20 ms |
344 KB |
Output is correct |
| 77 |
Partially correct |
22 ms |
344 KB |
Partially correct - number of queries: 5581 |
| 78 |
Correct |
5 ms |
344 KB |
Output is correct |
| 79 |
Correct |
13 ms |
344 KB |
Output is correct |
| 80 |
Partially correct |
24 ms |
344 KB |
Partially correct - number of queries: 5439 |
| 81 |
Partially correct |
23 ms |
344 KB |
Partially correct - number of queries: 5711 |
| 82 |
Partially correct |
21 ms |
344 KB |
Partially correct - number of queries: 5366 |
| 83 |
Correct |
2 ms |
344 KB |
Output is correct |
| 84 |
Correct |
13 ms |
344 KB |
Output is correct |
| 85 |
Partially correct |
22 ms |
344 KB |
Partially correct - number of queries: 5434 |
| 86 |
Correct |
6 ms |
344 KB |
Output is correct |
| 87 |
Correct |
2 ms |
344 KB |
Output is correct |
| 88 |
Correct |
3 ms |
344 KB |
Output is correct |
| 89 |
Correct |
5 ms |
344 KB |
Output is correct |
| 90 |
Correct |
3 ms |
344 KB |
Output is correct |
| 91 |
Correct |
7 ms |
344 KB |
Output is correct |
| 92 |
Correct |
5 ms |
344 KB |
Output is correct |
| 93 |
Correct |
9 ms |
344 KB |
Output is correct |
| 94 |
Correct |
6 ms |
344 KB |
Output is correct |
| 95 |
Correct |
7 ms |
344 KB |
Output is correct |
| 96 |
Correct |
5 ms |
344 KB |
Output is correct |
| 97 |
Correct |
6 ms |
344 KB |
Output is correct |
