oj.uz

답안 #933032

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
933032 2024-02-24T22:09:10 Z Edu175 서열 (APIO23_sequence) C++17
53 / 100
 2000 ms 66528 KB 
#include "sequence.h"
#include <bits/stdc++.h>
#define pb push_back
#define fst first
#define snd second
#define fore(i,a,b) for(ll i=a,apio=b;i<apio;i++)
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(),x.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define imp(v) for(auto slkdh:v)cout<<slkdh<<" ";cout<<"\n"
using namespace std;
typedef int ll;
typedef pair<ll,ll> ii;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const ll INF=5e6;
struct node{
	ll mxp,mnp,mxs,mns,sum;
};
node oper(node a, node b){
	a.mxp=max(a.mxp,a.sum+b.mxp);
	a.mnp=min(a.mnp,a.sum+b.mnp);
	a.mxs=max(a.mxs+b.sum,b.mxs);
	a.mns=min(a.mns+b.sum,b.mns);
	a.sum+=b.sum;
	return a;
}
node NEUT({-INF,INF,-INF,INF,0});
struct STcustom{
	vector<node>t; ll n;
	STcustom(ll n):t(2*n+5,node({0,0,0,0,0})),n(n){}
	void upd(ll p, ll v){
		p+=n;
		t[p].mxp+=v,t[p].mnp+=v,t[p].mxs+=v,t[p].mns+=v,t[p].sum+=v;
		for(;p>1;p>>=1)p^=p&1,t[p>>1]=oper(t[p],t[p^1]);
	}
	node query(ll l, ll r){
		node izq=NEUT,der=NEUT;
		for(l+=n,r+=n;l<r;l>>=1,r>>=1){
			if(l&1)izq=oper(izq,t[l++]);
			if(r&1)der=oper(t[--r],der);
		}
		return oper(izq,der);
	}
};
const ll C=5e5,MAXN=2*C+5;
struct STree{
	vector<ll>t; ll n;
	STree(ll n):t(2*n+5,INF),n(n){}
	void upd(ll p, ll v){
		for(p+=n,t[p]=min(t[p],v);p>1;p>>=1)t[p>>1]=min(t[p],t[p^1]);
	}
	ll query(ll l, ll r){
		ll res=INF;
		for(l+=n,r+=n;l<r;l>>=1,r>>=1){
			if(l&1)res=min(res,t[l++]);
			if(r&1)res=min(res,t[--r]);
		}
		return res;
	}
};
ll l[MAXN],r[MAXN];
bool cmp(ll i, ll j){
	return ii({l[i],i})<ii({l[j],j});
}
const ll B=283;
int sequence(int N, std::vector<int> A) {
	ll n=N;
	vector<ll>a(n);
	fore(i,0,n)a[i]=A[i]-1;
	vector<ll>pos[n];
	fore(i,0,n)pos[a[i]].pb(i);
	STcustom st(n);
	fore(i,0,n)st.upd(i,1);
	ll res=1;
	vector<ll>s(n);
	fore(i,0,n)s[i]=1;
	fore(i,0,n)if(SZ(pos[i])){
		for(auto j:pos[i])st.upd(j,-1),s[j]--;
		if(SZ(pos[i])<B){
			fore(s,0,SZ(pos[i]))fore(e,s+1,SZ(pos[i])){
				ll l=pos[i][s],r=pos[i][e];
				ll dif=st.query(l,r+1).sum;
				node pre=st.query(0,l+1),suf=st.query(r,n);
				if(dif<=0){
					if(dif+pre.mxs+suf.mxp+e-s+1>=0)res=max(res,e-s+1);
				}
				else {
					if(dif+pre.mns+suf.mnp-(e-s+1)<=0)res=max(res,e-s+1);
				}
			}
		}
		else {
			ll sum=0,rew=0;
			vector<ll>rw(n+1);
			vector<ll>ev{n};
			l[n]=r[n]=rw[n]=0;
			fore(j,0,n){
				sum+=s[j],rew+=a[j]==i;
				rw[j]=rew;
				l[j]=sum-rew,r[j]=sum+rew;
				ev.pb(j);
			}
			sort(ALL(ev),cmp); reverse(ALL(ev));
			STree st(2*n+5+C);
			for(auto i:ev){
				res=max(res,rw[i]-st.query(0,r[i]+C+1));
				st.upd(r[i]+C,rw[i]);
			}
		}
		for(auto j:pos[i])st.upd(j,-1),s[j]--;
	}
	return res;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 7 ms 604 KB Output is correct
16 Correct 7 ms 616 KB Output is correct
17 Correct 5 ms 6648 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 5 ms 632 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct

Subtask #3
0.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 212 ms 49504 KB Output is correct
3 Correct 220 ms 49504 KB Output is correct
4 Correct 681 ms 65404 KB Output is correct
5 Correct 229 ms 48560 KB Output is correct
6 Correct 221 ms 48488 KB Output is correct
7 Execution timed out 2079 ms 65952 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 415 ms 65584 KB Output is correct
3 Correct 399 ms 65408 KB Output is correct
4 Correct 404 ms 65456 KB Output is correct
5 Correct 394 ms 66528 KB Output is correct
6 Correct 300 ms 65668 KB Output is correct

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 239 ms 55064 KB Output is correct
2 Correct 255 ms 55220 KB Output is correct
3 Correct 246 ms 54628 KB Output is correct
4 Correct 248 ms 54652 KB Output is correct
5 Correct 223 ms 51280 KB Output is correct
6 Correct 229 ms 51188 KB Output is correct
7 Correct 204 ms 50324 KB Output is correct
8 Correct 204 ms 49804 KB Output is correct

Subtask #6
0.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 7 ms 604 KB Output is correct
16 Correct 7 ms 616 KB Output is correct
17 Correct 5 ms 6648 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 5 ms 632 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 41 ms 8284 KB Output is correct
24 Correct 42 ms 8288 KB Output is correct
25 Correct 41 ms 8284 KB Output is correct
26 Execution timed out 2062 ms 17972 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #7
0.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 7 ms 604 KB Output is correct
16 Correct 7 ms 616 KB Output is correct
17 Correct 5 ms 6648 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 5 ms 632 KB Output is correct
20 Correct 3 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 212 ms 49504 KB Output is correct
24 Correct 220 ms 49504 KB Output is correct
25 Correct 681 ms 65404 KB Output is correct
26 Correct 229 ms 48560 KB Output is correct
27 Correct 221 ms 48488 KB Output is correct
28 Execution timed out 2079 ms 65952 KB Time limit exceeded
29 Halted 0 ms 0 KB -