#include "holiday.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1e5;
const int MAXS = 20e5;
int N, S, D, A[MAXN+10];
vector<int> comp;
int getcomp(int x) { return lower_bound(comp.begin(), comp.end(), x)-comp.begin(); }
ll ans;
struct Node
{
int cnt; ll sum;
int lc, rc;
Node() : cnt(0), sum(0), lc(-1), rc(-1) {}
};
Node nodes[MAXS]; int cnt=0;
int tree[MAXN+10];
int newNode() { return cnt++; }
void makeTree(int node, int tl, int tr)
{
if(tl==tr) return;
int mid=tl+tr>>1;
nodes[node].lc=newNode();
nodes[node].rc=newNode();
makeTree(nodes[node].lc, tl, mid);
makeTree(nodes[node].rc, mid+1, tr);
}
int addTree(int node, int tl, int tr, int pos)
{
if(pos<tl || tr<pos) return node;
int ret=newNode();
if(tl==tr)
{
nodes[ret].cnt=(nodes[node].cnt)+1;
nodes[ret].sum=(nodes[node].sum)+comp[pos];
return ret;
}
int mid=tl+tr>>1;
nodes[ret].lc=addTree(nodes[node].lc, tl, mid, pos);
nodes[ret].rc=addTree(nodes[node].rc, mid+1, tr, pos);
nodes[ret].cnt=(nodes[nodes[ret].lc].cnt)+(nodes[nodes[ret].rc].cnt);
nodes[ret].sum=(nodes[nodes[ret].lc].sum)+(nodes[nodes[ret].rc].sum);
return ret;
}
ll query(int nodel, int noder, int tl, int tr, int k)
{
if(tl==tr) return comp[tl]*min((ll)k, (ll)(nodes[noder].cnt)-(nodes[nodel].cnt));
int mid=tl+tr>>1;
ll t=(nodes[nodes[noder].rc].cnt)-(nodes[nodes[nodel].rc].cnt);
if(t>=k) return query(nodes[nodel].rc, nodes[noder].rc, mid+1, tr, k);
else return query(nodes[nodel].lc, nodes[noder].lc, tl, mid, k-t)+(nodes[nodes[noder].rc].sum)-(nodes[nodes[nodel].rc].sum);
}
int dist(int l, int r) { return D-(r-l+min(abs(S-l), abs(r-S))); }
void solve(int sl, int sr, int el, int er)
{
if(sl>sr) return;
int i, j;
int smid=sl+sr>>1, emid=er; ll val=-1;
for(i=max(smid, el); i<=er; i++)
{
ll t=query(tree[smid-1], tree[i], 1, comp.size()-1, dist(smid, i));
if(t>val) val=t, emid=i;
}
ans=max(ans, val);
solve(sl, smid-1, el, emid);
solve(smid+1, sr, emid, er);
}
ll findMaxAttraction(int _N, int _S, int _D, int *_A)
{
int i, j;
N=_N; S=_S; D=_D; S++;
for(i=1; i<=N; i++) A[i]=_A[i-1], comp.push_back(A[i]); comp.push_back(-1);
sort(comp.begin(), comp.end());
comp.erase(unique(comp.begin(), comp.end()), comp.end());
tree[0]=newNode();
makeTree(tree[0], 1, comp.size()-1);
for(i=1; i<=N; i++) tree[i]=addTree(tree[i-1], 1, comp.size()-1, getcomp(A[i]));
solve(1, N, 1, N);
return ans;
}
Compilation message
holiday.cpp: In function 'void makeTree(int, int, int)':
holiday.cpp:31:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=tl+tr>>1;
~~^~~
holiday.cpp: In function 'int addTree(int, int, int, int)':
holiday.cpp:48:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=tl+tr>>1;
~~^~~
holiday.cpp: In function 'll query(int, int, int, int, int)':
holiday.cpp:59:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=tl+tr>>1;
~~^~~
holiday.cpp: In function 'void solve(int, int, int, int)':
holiday.cpp:71:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int smid=sl+sr>>1, emid=er; ll val=-1;
~~^~~
holiday.cpp:70:12: warning: unused variable 'j' [-Wunused-variable]
int i, j;
^
holiday.cpp: In function 'll findMaxAttraction(int, int, int, int*)':
holiday.cpp:86:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for(i=1; i<=N; i++) A[i]=_A[i-1], comp.push_back(A[i]); comp.push_back(-1);
^~~
holiday.cpp:86:61: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for(i=1; i<=N; i++) A[i]=_A[i-1], comp.push_back(A[i]); comp.push_back(-1);
^~~~
holiday.cpp:84:12: warning: unused variable 'j' [-Wunused-variable]
int i, j;
^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
47352 KB |
Output is correct |
2 |
Correct |
42 ms |
47352 KB |
Output is correct |
3 |
Correct |
41 ms |
47352 KB |
Output is correct |
4 |
Correct |
50 ms |
47228 KB |
Output is correct |
5 |
Correct |
42 ms |
47352 KB |
Output is correct |
6 |
Correct |
42 ms |
47352 KB |
Output is correct |
7 |
Correct |
42 ms |
47384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
66 ms |
49252 KB |
Output is correct |
2 |
Correct |
61 ms |
49144 KB |
Output is correct |
3 |
Correct |
75 ms |
49136 KB |
Output is correct |
4 |
Correct |
74 ms |
49136 KB |
Output is correct |
5 |
Correct |
173 ms |
49164 KB |
Output is correct |
6 |
Correct |
78 ms |
47992 KB |
Output is correct |
7 |
Correct |
96 ms |
48336 KB |
Output is correct |
8 |
Correct |
108 ms |
48628 KB |
Output is correct |
9 |
Correct |
61 ms |
47864 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
47 ms |
47344 KB |
Output is correct |
2 |
Correct |
43 ms |
47352 KB |
Output is correct |
3 |
Correct |
46 ms |
47352 KB |
Output is correct |
4 |
Correct |
47 ms |
47352 KB |
Output is correct |
5 |
Correct |
50 ms |
47492 KB |
Output is correct |
6 |
Correct |
43 ms |
47264 KB |
Output is correct |
7 |
Correct |
50 ms |
47352 KB |
Output is correct |
8 |
Correct |
42 ms |
47352 KB |
Output is correct |
9 |
Correct |
109 ms |
47352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
71 ms |
49852 KB |
Output is correct |
2 |
Correct |
398 ms |
49864 KB |
Output is correct |
3 |
Correct |
155 ms |
48500 KB |
Output is correct |
4 |
Correct |
46 ms |
47352 KB |
Output is correct |
5 |
Correct |
45 ms |
47348 KB |
Output is correct |
6 |
Correct |
47 ms |
47352 KB |
Output is correct |
7 |
Correct |
42 ms |
47352 KB |
Output is correct |
8 |
Correct |
522 ms |
49776 KB |
Output is correct |
9 |
Correct |
556 ms |
49772 KB |
Output is correct |