#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
using ll = long long;
//vector<int> ask(int i);
vector<int> a[200006];
int summ = 0;
int solve(int l, int r){
if(l+1>=r)return 0;
int cnt = a[l][1]-a[r][1];
if(cnt==0)return 0;
int s = l+r>>1;
if(a[s][0]==-1)a[s]=ask(s);
if(a[s][0]+a[s][1]==summ)return max(solve(l, s), solve(s, r));
if(a[s][0]+a[s][1]==0)return s;
int R = s-1, L = s+1;
for(int i=s-1; i>=l; i--){
if(a[i][0]==-1)a[i]=ask(i);
if(a[i][0]+a[i][1]==0)return i;
if(a[i][0]+a[i][1]==summ){
R=i;
break;
}
}
for(int i=s+1; i<=r; i++){
if(a[i][0]==-1)a[i]=ask(i);
if(a[i][0]+a[i][1]==0)return i;
if(a[i][0]+a[i][1]==summ){
L=i;
break;
}
}
return max(solve(l, R), solve(L, r));
}
int find_best(int n){
if(n<=5000){
for(int i=0; i<n; i++){
vector<int> ans = ask(i);
if(ans[0]==0 && ans[1]==0)return i;
}
}
for(int i=0; i< n; i++){
a[i].push_back(-1);
}
for(int i=0; i<600; i++){
ll ind = i;
if(a[ind][0]!=-1){
i--;
continue;
}
vector<int> ans = ask(ind);
a[ind]=ans;
summ=max(summ, ans[0]+ans[1]);
if(ans[0]+ans[1]==0)return ind;
}
int L = 0, R = n-1;
for(int i=0; i<n; i++){
if(a[i][0]==-1)a[i] = ask(i);
if(a[i][0]+a[i][1]==summ){
L=i;
break;
}
if(a[i][0]+a[i][1]==0)return i;
}
for(int i=n-1; i>=0; i--){
if(a[i][0]==-1)a[i]=ask(i);
if(a[i][0]+a[i][1]==summ){
R=i;
break;
}
if(a[i][0]+a[i][1]==0)return i;
}
return solve(L, R);
}
Compilation message
prize.cpp: In function 'int solve(int, int)':
prize.cpp:17:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
17 | int s = l+r>>1;
| ~^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 2 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 3 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 4 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 5 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 6 |
Correct |
8 ms |
11396 KB |
Output is correct |
| 7 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 8 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 9 |
Correct |
11 ms |
11404 KB |
Output is correct |
| 10 |
Correct |
11 ms |
11396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
11400 KB |
Output is correct |
| 2 |
Correct |
11 ms |
11400 KB |
Output is correct |
| 3 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 4 |
Correct |
13 ms |
11396 KB |
Output is correct |
| 5 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 6 |
Correct |
8 ms |
11388 KB |
Output is correct |
| 7 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 8 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 9 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 10 |
Correct |
13 ms |
11388 KB |
Output is correct |
| 11 |
Correct |
13 ms |
11392 KB |
Output is correct |
| 12 |
Correct |
13 ms |
11392 KB |
Output is correct |
| 13 |
Correct |
13 ms |
11400 KB |
Output is correct |
| 14 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 15 |
Correct |
33 ms |
11392 KB |
Output is correct |
| 16 |
Partially correct |
38 ms |
11396 KB |
Partially correct - number of queries: 5240 |
| 17 |
Correct |
10 ms |
11392 KB |
Output is correct |
| 18 |
Partially correct |
32 ms |
11396 KB |
Partially correct - number of queries: 5211 |
| 19 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 20 |
Correct |
26 ms |
8024 KB |
Output is correct |
| 21 |
Partially correct |
34 ms |
11392 KB |
Partially correct - number of queries: 5200 |
| 22 |
Correct |
29 ms |
11396 KB |
Output is correct |
| 23 |
Correct |
11 ms |
11352 KB |
Output is correct |
| 24 |
Correct |
12 ms |
11392 KB |
Output is correct |
| 25 |
Correct |
32 ms |
11392 KB |
Output is correct |
| 26 |
Correct |
28 ms |
11396 KB |
Output is correct |
| 27 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 28 |
Correct |
35 ms |
11396 KB |
Output is correct |
| 29 |
Correct |
34 ms |
11392 KB |
Output is correct |
| 30 |
Partially correct |
31 ms |
11392 KB |
Partially correct - number of queries: 5185 |
| 31 |
Correct |
10 ms |
11400 KB |
Output is correct |
| 32 |
Correct |
13 ms |
11400 KB |
Output is correct |
| 33 |
Correct |
1 ms |
5148 KB |
Output is correct |
| 34 |
Partially correct |
33 ms |
11392 KB |
Partially correct - number of queries: 5222 |
| 35 |
Correct |
12 ms |
11392 KB |
Output is correct |
| 36 |
Partially correct |
45 ms |
11396 KB |
Partially correct - number of queries: 5154 |
| 37 |
Correct |
15 ms |
11392 KB |
Output is correct |
| 38 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 39 |
Partially correct |
35 ms |
11396 KB |
Partially correct - number of queries: 5157 |
| 40 |
Correct |
31 ms |
11396 KB |
Output is correct |
| 41 |
Partially correct |
37 ms |
11392 KB |
Partially correct - number of queries: 5200 |
| 42 |
Partially correct |
30 ms |
11396 KB |
Partially correct - number of queries: 5200 |
| 43 |
Partially correct |
31 ms |
11396 KB |
Partially correct - number of queries: 5102 |
| 44 |
Partially correct |
37 ms |
11392 KB |
Partially correct - number of queries: 5224 |
| 45 |
Correct |
29 ms |
11404 KB |
Output is correct |
| 46 |
Correct |
10 ms |
11396 KB |
Output is correct |
| 47 |
Correct |
33 ms |
11396 KB |
Output is correct |
| 48 |
Partially correct |
29 ms |
11396 KB |
Partially correct - number of queries: 5197 |
| 49 |
Partially correct |
35 ms |
11400 KB |
Partially correct - number of queries: 5191 |
| 50 |
Partially correct |
31 ms |
11396 KB |
Partially correct - number of queries: 5220 |
| 51 |
Partially correct |
32 ms |
11476 KB |
Partially correct - number of queries: 5212 |
| 52 |
Partially correct |
36 ms |
11396 KB |
Partially correct - number of queries: 5229 |
| 53 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 54 |
Partially correct |
34 ms |
11396 KB |
Partially correct - number of queries: 5193 |
| 55 |
Correct |
10 ms |
11400 KB |
Output is correct |
| 56 |
Partially correct |
36 ms |
11352 KB |
Partially correct - number of queries: 5192 |
| 57 |
Partially correct |
29 ms |
11400 KB |
Partially correct - number of queries: 5191 |
| 58 |
Partially correct |
37 ms |
11404 KB |
Partially correct - number of queries: 5202 |
| 59 |
Partially correct |
31 ms |
11352 KB |
Partially correct - number of queries: 5209 |
| 60 |
Partially correct |
39 ms |
11352 KB |
Partially correct - number of queries: 5154 |
| 61 |
Correct |
12 ms |
11352 KB |
Output is correct |
| 62 |
Correct |
11 ms |
11352 KB |
Output is correct |
| 63 |
Correct |
11 ms |
11352 KB |
Output is correct |
| 64 |
Correct |
12 ms |
11352 KB |
Output is correct |
| 65 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 66 |
Correct |
12 ms |
11392 KB |
Output is correct |
| 67 |
Correct |
16 ms |
11400 KB |
Output is correct |
| 68 |
Correct |
10 ms |
11396 KB |
Output is correct |
| 69 |
Correct |
11 ms |
11392 KB |
Output is correct |
| 70 |
Correct |
14 ms |
11400 KB |
Output is correct |
| 71 |
Partially correct |
34 ms |
11396 KB |
Partially correct - number of queries: 5359 |
| 72 |
Correct |
12 ms |
11396 KB |
Output is correct |
| 73 |
Partially correct |
31 ms |
11396 KB |
Partially correct - number of queries: 5296 |
| 74 |
Partially correct |
29 ms |
11392 KB |
Partially correct - number of queries: 5323 |
| 75 |
Correct |
11 ms |
11388 KB |
Output is correct |
| 76 |
Correct |
35 ms |
11400 KB |
Output is correct |
| 77 |
Partially correct |
38 ms |
11396 KB |
Partially correct - number of queries: 5320 |
| 78 |
Correct |
13 ms |
11388 KB |
Output is correct |
| 79 |
Correct |
21 ms |
11400 KB |
Output is correct |
| 80 |
Partially correct |
34 ms |
11400 KB |
Partially correct - number of queries: 5321 |
| 81 |
Partially correct |
34 ms |
11396 KB |
Partially correct - number of queries: 5299 |
| 82 |
Partially correct |
37 ms |
11396 KB |
Partially correct - number of queries: 5236 |
| 83 |
Correct |
12 ms |
11400 KB |
Output is correct |
| 84 |
Correct |
28 ms |
11396 KB |
Output is correct |
| 85 |
Partially correct |
31 ms |
11396 KB |
Partially correct - number of queries: 5276 |
| 86 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 87 |
Correct |
11 ms |
11592 KB |
Output is correct |
| 88 |
Correct |
10 ms |
11388 KB |
Output is correct |
| 89 |
Correct |
11 ms |
11396 KB |
Output is correct |
| 90 |
Correct |
10 ms |
11396 KB |
Output is correct |
| 91 |
Correct |
13 ms |
11392 KB |
Output is correct |
| 92 |
Correct |
10 ms |
11396 KB |
Output is correct |
| 93 |
Correct |
12 ms |
11392 KB |
Output is correct |
| 94 |
Correct |
14 ms |
11392 KB |
Output is correct |
| 95 |
Correct |
13 ms |
11396 KB |
Output is correct |
| 96 |
Correct |
12 ms |
11396 KB |
Output is correct |
| 97 |
Correct |
11 ms |
11392 KB |
Output is correct |
