#include "sequence.h"
#include<bits/stdc++.h>
#define ll int
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
#define sz(a) ((ll)(a).size())
using namespace std;
const ll maxn=500005, inf=1e9;
vector <ll> p[maxn];
ll a[maxn], minp[maxn], maxp[maxn], mins[maxn], maxs[maxn];
namespace SegTree
{
ll n, Max[maxn*4], Min[maxn*4], lz[maxn*4];
void build(ll i, ll Start, ll End)
{
if (Start==End) {Min[i]=Max[i]=Start; return;}
ll mid=(Start+End)/2;
build(i*2, Start, mid), build(i*2+1, mid+1, End);
Min[i]=min(Min[i*2], Min[i*2+1]);
Max[i]=max(Max[i*2], Max[i*2+1]);
}
void init(ll sz){n=sz, build(1, 0, n);}
void Move(ll i)
{
ll t=lz[i]; lz[i]=0;
Min[i*2]+=t, Max[i*2]+=t, lz[i*2]+=t;
Min[i*2+1]+=t, Max[i*2+1]+=t, lz[i*2+1]+=t;
}
void update(ll i, ll Start, ll End, ll l, ll r, ll x)
{
if (Start>r || End<l) return;
if (Start>=l && End<=r) {Max[i]+=x, Min[i]+=x, lz[i]+=x; return;}
ll mid=(Start+End)/2; if (lz[i]) Move(i);
if (mid>=l) update(i*2, Start, mid, l, r, x);
if (mid+1<=r) update(i*2+1, mid+1, End, l, r, x);
Min[i]=min(Min[i*2], Min[i*2+1]);
Max[i]=max(Max[i*2], Max[i*2+1]);
}
void update(ll l, ll r, ll x) {update(1, 0, n, l, r, x);}
pll query(ll i, ll Start, ll End, ll l, ll r)
{
if (Start>r || End<l) return {1e9, 0};
if (Start>=l && End<=r) return {Min[i], Max[i]};
ll mid=(Start+End)/2; if (lz[i]) Move(i);
if (mid<l) return query(i*2+1, mid+1, End, l, r);
if (mid+1>r) return query(i*2, Start, mid, l, r);
pll q1=query(i*2, Start, mid, l, r), q2=query(i*2+1, mid+1, End, l, r);
return {min(q1.fi, q2.fi), max(q1.se, q2.se)};
}
pll query(ll l, ll r){return query(1, 0, n, l, r);}
}
int sequence(int n, vector <int> A)
{
ll ans=0;
SegTree::init(n);
for (ll i=1; i<=n; i++) a[i]=A[i-1], p[a[i]].pb(i);
for (ll i=1; i<=n; i++)
{
for (ll z=0; z<sz(p[i]); z++)
{
ll j=p[i][z];
while (z+ans<sz(p[i]))
{
ll r=p[i][z+ans], l1, r1, l2, r2;
tie(l1, r1)=SegTree::query(0, j-1);
tie(l2, r2)=SegTree::query(r, n);
if (max(l1, l2-2*(ans+1))-min(r1, r2)<=0) ans++;
else break;
}
SegTree::update(j, n, -2);
}
}
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
20572 KB |
Output is correct |
2 |
Correct |
5 ms |
20572 KB |
Output is correct |
3 |
Correct |
5 ms |
20416 KB |
Output is correct |
4 |
Correct |
5 ms |
20568 KB |
Output is correct |
5 |
Correct |
4 ms |
20660 KB |
Output is correct |
6 |
Incorrect |
5 ms |
20668 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
20572 KB |
Output is correct |
2 |
Correct |
5 ms |
20572 KB |
Output is correct |
3 |
Correct |
5 ms |
20416 KB |
Output is correct |
4 |
Correct |
5 ms |
20568 KB |
Output is correct |
5 |
Correct |
4 ms |
20660 KB |
Output is correct |
6 |
Incorrect |
5 ms |
20668 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
20572 KB |
Output is correct |
2 |
Correct |
151 ms |
50084 KB |
Output is correct |
3 |
Correct |
167 ms |
49960 KB |
Output is correct |
4 |
Correct |
152 ms |
39984 KB |
Output is correct |
5 |
Correct |
147 ms |
48996 KB |
Output is correct |
6 |
Correct |
145 ms |
49020 KB |
Output is correct |
7 |
Correct |
120 ms |
40672 KB |
Output is correct |
8 |
Correct |
138 ms |
41040 KB |
Output is correct |
9 |
Correct |
152 ms |
40108 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
20572 KB |
Output is correct |
2 |
Incorrect |
170 ms |
39188 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
225 ms |
52676 KB |
Output is correct |
2 |
Correct |
230 ms |
52468 KB |
Output is correct |
3 |
Correct |
239 ms |
52048 KB |
Output is correct |
4 |
Correct |
228 ms |
52048 KB |
Output is correct |
5 |
Correct |
232 ms |
48560 KB |
Output is correct |
6 |
Correct |
215 ms |
48960 KB |
Output is correct |
7 |
Correct |
176 ms |
47352 KB |
Output is correct |
8 |
Correct |
162 ms |
47172 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
20572 KB |
Output is correct |
2 |
Correct |
5 ms |
20572 KB |
Output is correct |
3 |
Correct |
5 ms |
20416 KB |
Output is correct |
4 |
Correct |
5 ms |
20568 KB |
Output is correct |
5 |
Correct |
4 ms |
20660 KB |
Output is correct |
6 |
Incorrect |
5 ms |
20668 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
20572 KB |
Output is correct |
2 |
Correct |
5 ms |
20572 KB |
Output is correct |
3 |
Correct |
5 ms |
20416 KB |
Output is correct |
4 |
Correct |
5 ms |
20568 KB |
Output is correct |
5 |
Correct |
4 ms |
20660 KB |
Output is correct |
6 |
Incorrect |
5 ms |
20668 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |