#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 (ans != -1) return;
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 (ans != -1) return;
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);
}
}
else{
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<474; i++){
vi v = ask(i);
ll s = v[0] + v[1];
common_val = max(common_val, s);
if (s > 30){
break;
}
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 |
2 ms |
344 KB |
Output is correct |
3 |
Correct |
2 ms |
344 KB |
Output is correct |
4 |
Correct |
3 ms |
344 KB |
Output is correct |
5 |
Correct |
3 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 |
2 ms |
344 KB |
Output is correct |
10 |
Correct |
2 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
344 KB |
Output is correct |
2 |
Correct |
2 ms |
428 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 |
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 |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
0 ms |
344 KB |
Output is correct |
13 |
Correct |
2 ms |
344 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
3 ms |
344 KB |
Output is correct |
16 |
Correct |
21 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
19 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
7 ms |
344 KB |
Output is correct |
21 |
Correct |
6 ms |
344 KB |
Output is correct |
22 |
Correct |
2 ms |
344 KB |
Output is correct |
23 |
Correct |
3 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
6 ms |
344 KB |
Output is correct |
26 |
Correct |
9 ms |
344 KB |
Output is correct |
27 |
Correct |
3 ms |
344 KB |
Output is correct |
28 |
Correct |
16 ms |
344 KB |
Output is correct |
29 |
Correct |
16 ms |
344 KB |
Output is correct |
30 |
Correct |
19 ms |
344 KB |
Output is correct |
31 |
Correct |
1 ms |
344 KB |
Output is correct |
32 |
Correct |
2 ms |
344 KB |
Output is correct |
33 |
Correct |
0 ms |
344 KB |
Output is correct |
34 |
Correct |
5 ms |
344 KB |
Output is correct |
35 |
Correct |
4 ms |
344 KB |
Output is correct |
36 |
Correct |
3 ms |
344 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
2 ms |
344 KB |
Output is correct |
39 |
Correct |
9 ms |
344 KB |
Output is correct |
40 |
Correct |
15 ms |
344 KB |
Output is correct |
41 |
Correct |
9 ms |
344 KB |
Output is correct |
42 |
Correct |
9 ms |
344 KB |
Output is correct |
43 |
Correct |
10 ms |
344 KB |
Output is correct |
44 |
Correct |
11 ms |
344 KB |
Output is correct |
45 |
Correct |
3 ms |
344 KB |
Output is correct |
46 |
Correct |
0 ms |
344 KB |
Output is correct |
47 |
Correct |
5 ms |
344 KB |
Output is correct |
48 |
Correct |
16 ms |
344 KB |
Output is correct |
49 |
Correct |
1 ms |
344 KB |
Output is correct |
50 |
Correct |
14 ms |
344 KB |
Output is correct |
51 |
Correct |
8 ms |
344 KB |
Output is correct |
52 |
Correct |
1 ms |
344 KB |
Output is correct |
53 |
Correct |
3 ms |
344 KB |
Output is correct |
54 |
Correct |
12 ms |
344 KB |
Output is correct |
55 |
Correct |
0 ms |
344 KB |
Output is correct |
56 |
Correct |
18 ms |
424 KB |
Output is correct |
57 |
Correct |
14 ms |
344 KB |
Output is correct |
58 |
Correct |
11 ms |
344 KB |
Output is correct |
59 |
Correct |
14 ms |
344 KB |
Output is correct |
60 |
Correct |
8 ms |
344 KB |
Output is correct |
61 |
Correct |
2 ms |
344 KB |
Output is correct |
62 |
Correct |
2 ms |
344 KB |
Output is correct |
63 |
Correct |
1 ms |
344 KB |
Output is correct |
64 |
Correct |
4 ms |
344 KB |
Output is correct |
65 |
Correct |
0 ms |
344 KB |
Output is correct |
66 |
Correct |
2 ms |
344 KB |
Output is correct |
67 |
Correct |
1 ms |
344 KB |
Output is correct |
68 |
Correct |
3 ms |
344 KB |
Output is correct |
69 |
Correct |
2 ms |
344 KB |
Output is correct |
70 |
Correct |
0 ms |
344 KB |
Output is correct |
71 |
Correct |
25 ms |
344 KB |
Output is correct |
72 |
Correct |
2 ms |
344 KB |
Output is correct |
73 |
Correct |
20 ms |
344 KB |
Output is correct |
74 |
Correct |
23 ms |
344 KB |
Output is correct |
75 |
Correct |
2 ms |
344 KB |
Output is correct |
76 |
Correct |
15 ms |
344 KB |
Output is correct |
77 |
Correct |
14 ms |
344 KB |
Output is correct |
78 |
Correct |
2 ms |
344 KB |
Output is correct |
79 |
Correct |
6 ms |
344 KB |
Output is correct |
80 |
Correct |
11 ms |
344 KB |
Output is correct |
81 |
Correct |
22 ms |
344 KB |
Output is correct |
82 |
Correct |
11 ms |
344 KB |
Output is correct |
83 |
Correct |
3 ms |
344 KB |
Output is correct |
84 |
Correct |
9 ms |
344 KB |
Output is correct |
85 |
Correct |
13 ms |
344 KB |
Output is correct |
86 |
Correct |
4 ms |
344 KB |
Output is correct |
87 |
Correct |
1 ms |
344 KB |
Output is correct |
88 |
Correct |
5 ms |
344 KB |
Output is correct |
89 |
Correct |
4 ms |
344 KB |
Output is correct |
90 |
Correct |
3 ms |
344 KB |
Output is correct |
91 |
Correct |
3 ms |
344 KB |
Output is correct |
92 |
Correct |
3 ms |
344 KB |
Output is correct |
93 |
Correct |
5 ms |
596 KB |
Output is correct |
94 |
Correct |
3 ms |
344 KB |
Output is correct |
95 |
Correct |
7 ms |
344 KB |
Output is correct |
96 |
Correct |
4 ms |
344 KB |
Output is correct |
97 |
Correct |
3 ms |
344 KB |
Output is correct |