#include "ricehub.h"
#include<bits/stdc++.h>
using namespace std;
int besthub(int R, int L, int X[], long long B)
{
int ans = 0;
vector<int64_t>pref(R + 1,0),dpref(R + 1,0);
vector<int64_t>suff(R + 1,0),dsuff(R + 1,0);
for (int i = 0 ;i<R - 1;++i){
pref[i + 1] = pref[i] + (X[i + 1] - X[i]);
dpref[i + 2] = pref[i + 1] + dpref[i + 1];
}
for (int i = R - 2 ;i>=0;--i){
suff[i] = suff[i + 1] + (X[i + 1] - X[i]);
dsuff[i] = suff[i] + dsuff[i + 1];
}
auto dist = [&](int l,int r){
return pref[r] * (r - l) - dpref[r] + dpref[l];
};
auto dist2 = [&](int l,int r){
return suff[l] * (r - l) + dsuff[r + 1] - dsuff[l + 1];
};
auto distt = [&](int l,int r){
int mid = (l + r)>>1;
return dist(l,mid) + dist2(mid,r);
};
int l = 0,r = 0;
while(l<=r && r < R){
if (r + 1 < R && distt(l,r + 1)<=B){
++r;
}
else if (l + 1<=r) {
++l;
}
else {
l++;
r = l;
}
//cout<<r<<" "<<l<<" "<<distt(l,r)<<'\n';
ans = max(ans,r - l + 1);
}
return ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
312 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
308 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
4 ms |
312 KB |
Output is correct |
| 3 |
Correct |
5 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
3 ms |
212 KB |
Output is correct |
| 7 |
Correct |
2 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
2 ms |
312 KB |
Output is correct |
| 11 |
Correct |
1 ms |
212 KB |
Output is correct |
| 12 |
Correct |
1 ms |
212 KB |
Output is correct |
| 13 |
Correct |
0 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
312 KB |
Output is correct |
| 17 |
Correct |
1 ms |
212 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
312 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
212 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
212 KB |
Output is correct |
| 27 |
Correct |
1 ms |
212 KB |
Output is correct |
| 28 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
312 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
312 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
312 KB |
Output is correct |
| 18 |
Correct |
6 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
316 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
468 KB |
Output is correct |
| 22 |
Correct |
1 ms |
468 KB |
Output is correct |
| 23 |
Correct |
8 ms |
468 KB |
Output is correct |
| 24 |
Correct |
1 ms |
468 KB |
Output is correct |
| 25 |
Correct |
1 ms |
468 KB |
Output is correct |
| 26 |
Correct |
1 ms |
468 KB |
Output is correct |
| 27 |
Correct |
1 ms |
476 KB |
Output is correct |
| 28 |
Correct |
2 ms |
476 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
1108 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1108 KB |
Output is correct |
| 3 |
Correct |
17 ms |
4888 KB |
Output is correct |
| 4 |
Correct |
19 ms |
4820 KB |
Output is correct |
| 5 |
Correct |
8 ms |
2372 KB |
Output is correct |
| 6 |
Correct |
19 ms |
2388 KB |
Output is correct |
| 7 |
Correct |
13 ms |
4564 KB |
Output is correct |
| 8 |
Correct |
13 ms |
4552 KB |
Output is correct |
| 9 |
Correct |
6 ms |
2332 KB |
Output is correct |
| 10 |
Correct |
6 ms |
2372 KB |
Output is correct |
| 11 |
Correct |
28 ms |
4812 KB |
Output is correct |
| 12 |
Correct |
15 ms |
4808 KB |
Output is correct |
| 13 |
Correct |
11 ms |
2416 KB |
Output is correct |
| 14 |
Correct |
7 ms |
2372 KB |
Output is correct |
| 15 |
Correct |
11 ms |
3668 KB |
Output is correct |
| 16 |
Correct |
13 ms |
3660 KB |
Output is correct |
| 17 |
Correct |
15 ms |
4288 KB |
Output is correct |
| 18 |
Correct |
13 ms |
4364 KB |
Output is correct |
| 19 |
Correct |
18 ms |
4564 KB |
Output is correct |
| 20 |
Correct |
17 ms |
4564 KB |
Output is correct |
