oj.uz

답안 #895171

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895171 2023-12-29T14:05:00 Z amirhoseinfar1385 별자리 3 (JOI20_constellation3) C++17
35 / 100
 1500 ms 60992 KB 
#include<bits/stdc++.h>
using namespace std;
const long long maxn=200000+10;
struct node{
	long long x,y,w,l,r;
}allq[maxn];
vector<int>allqi[maxn];
long long all[maxn],q,n;
vector<long long>sn,si;
pair<long long,long long>val[maxn],fakeval[maxn],fa[maxn],mx[maxn],val2[maxn];
pair<vector<long long>,vector<long long>>fmx[maxn];
int kaf=(1<<18);

struct segment{
	long long seg[(1<<19)];
	void upd(int i,long long w){
		while(i!=0){
			seg[i]+=w;
			i>>=1;
		}
	}
	long long pors(int i,int l,int r,int tl,int tr){
		if(l>r||l>tr||r<tl||tl>tr){
			return 0ll;
		}
		if(l>=tl&&r<=tr){
			return seg[i];
		}
		int m=(l+r)>>1;
		long long ret=pors((i<<1),l,m,tl,tr);
		ret+=pors((i<<1)^1,m+1,r,tl,tr);
		return ret;
	}
}val2f,val2s;

bool cmpn(long long a,long long b){
	return allq[a].y<allq[b].y;
}

bool cmpi(long long a,long long b){
	if(all[a]==all[b]){
		return a<b;
	}
	return all[a]<all[b];
}

void callr()
{
	deque<pair<long long,long long>>allind;
	allind.push_back(make_pair(n+2,0));
	for(int i=1;i<=n;i++){
		for(auto x:allqi[i]){
			int p=lower_bound(allind.begin(),allind.end(),make_pair(allq[x].y,0ll))-allind.begin();
			allq[x].l=allind[p].second;
		}	
		while((int)allind.front().first<all[i]){
			if(mx[i].first==allind.front().first){
				fmx[i].first.push_back(allind.front().second);
			}
			if(mx[i].first<allind.front().first){
				mx[i].first=allind.front().first;
				fmx[i].first.clear();
				fmx[i].first.push_back(allind.front().second);
			}
			allind.pop_front();
		}
		fa[i].first=allind.front().second;
		allind.push_front(make_pair(all[i],i));
	}
	allind.clear();
	allind.push_back(make_pair(n+1,n+1));
	for(int i=n;i>=1;i--){
		for(auto x:allqi[i]){
			int p=lower_bound(allind.begin(),allind.end(),make_pair(allq[x].y,0ll))-allind.begin();
			allq[x].r=allind[p].second;
		}
		while((int)allind.front().first<all[i]){
			if(mx[i].second==allind.front().first){
				fmx[i].second.push_back(allind.front().second);
			}
			if(mx[i].second<allind.front().first){
				mx[i].second=allind.front().first;
				fmx[i].second.clear();
				fmx[i].second.push_back(allind.front().second);
			}
			allind.pop_front();
		}
		fa[i].second=allind.front().second;
		allind.push_front(make_pair(all[i],i));
	}
}
long long mainres=0;

void updn(long long ind){
	long long res=0,resa=0;
	long long maxa=-1;
	for(long long i=allq[ind].x;i<allq[ind].r;i++){
		res+=val2[i].second;
	}
	maxa=-1;
	for(long long i=allq[ind].x;i>allq[ind].l;i--){
		res+=val2[i].first;
	}
	res+=resa+allq[ind].w;
	fakeval[allq[ind].r].first=max(fakeval[allq[ind].r].first,res);
	fakeval[allq[ind].l].second=max(fakeval[allq[ind].l].second,res);
	mainres=max(mainres,res);
}

void upd(long long ind){
	val[ind]=fakeval[ind];
	long long res=0,maxa=-1;
	vector<long long>v;
	if(fa[ind].first!=ind-1){
		v=fmx[ind].first;
		if((long long)v.size()>0){
			for(auto x:v){
				res+=val[x].second;
			}
			res+=val[v.back()].first;
			val[ind].first=max(val[ind].first,res);
		}
	}
	res=0,maxa=-1;
	v.clear();
	if(fa[ind].second!=ind+1){
		v=fmx[ind].second;
		if((long long)v.size()>0){
			for(auto x:v){
				res+=val[x].first;
			}
			res+=val[v.back()].second;
			val[ind].second=max(val[ind].second,res);
		}
	}
	mainres=max(mainres,max(val[ind].first,val[ind].second));
	val2[ind].first=-val2f.pors(1,0,kaf-1,fa[ind].first+1,ind-1);
//	for(int i=ind-1;i>fa[ind].first;i--){
//		val2[ind].first-=val2[i].first;
//	}
	val2[ind].first+=val[ind].first;
	val2f.upd(ind+kaf,val2[ind].first);
	val2[ind].second=-val2s.pors(1,0,kaf-1,ind+1,fa[ind].second-1);
//	for(int i=ind+1;i<fa[ind].second;i++){
//		val2[ind].second-=val2[i].second;
//	}
	val2[ind].second+=val[ind].second;
	val2s.upd(ind+kaf,val2[ind].second);
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n;
	for(long long i=1;i<=n;i++){
		cin>>all[i];
		si.push_back(i);
	}
	cin>>q;
	long long suma=0;
	for(long long i=1;i<=q;i++){
		sn.push_back(i);
		cin>>allq[i].x>>allq[i].y>>allq[i].w;
		allqi[allq[i].x].push_back(i);
		suma+=allq[i].w;
	}
	callr();
	sort(sn.begin(),sn.end(),cmpn);
	sort(si.begin(),si.end(),cmpi);
	long long i=0,j=0;
	while(i<(long long)sn.size()&&j<(long long)si.size()){
		if(allq[sn[i]].y<=all[si[j]]){
			updn(sn[i]);
			i++;
		}
		else{
			upd(si[j]);
			j++;
		}
	}
	while(i<(long long)sn.size()){
		updn(sn[i]);
		i++;
	}
	while(j<(long long)si.size()){
		upd(si[j]);
		j++;
	}
	long long now=(long long)si.size()-1;
	long long res=val[si[now]].second;
	while(now!=0&&all[si[now-1]]==all[si[now]]){
		now--;
		res+=val[si[now]].second;
	}
	res+=val[si[now]].first;
	mainres=max(mainres,res);
	mainres=suma-mainres;
	cout<<mainres<<"\n";
}

Compilation message

constellation3.cpp: In function 'void updn(long long int)':
constellation3.cpp:96:12: warning: variable 'maxa' set but not used [-Wunused-but-set-variable]
   96 |  long long maxa=-1;
      |            ^~~~
constellation3.cpp: In function 'void upd(long long int)':
constellation3.cpp:112:18: warning: variable 'maxa' set but not used [-Wunused-but-set-variable]
  112 |  long long res=0,maxa=-1;
      |                  ^~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 33112 KB Output is correct
2 Correct 6 ms 33272 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33116 KB Output is correct
5 Correct 5 ms 33116 KB Output is correct
6 Correct 6 ms 33220 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 33116 KB Output is correct
10 Correct 5 ms 33112 KB Output is correct
11 Correct 6 ms 33116 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 33368 KB Output is correct
14 Correct 6 ms 33308 KB Output is correct
15 Correct 5 ms 33116 KB Output is correct
16 Correct 5 ms 33196 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 6 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33356 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 33112 KB Output is correct
2 Correct 6 ms 33272 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33116 KB Output is correct
5 Correct 5 ms 33116 KB Output is correct
6 Correct 6 ms 33220 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 33116 KB Output is correct
10 Correct 5 ms 33112 KB Output is correct
11 Correct 6 ms 33116 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 33368 KB Output is correct
14 Correct 6 ms 33308 KB Output is correct
15 Correct 5 ms 33116 KB Output is correct
16 Correct 5 ms 33196 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 6 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33356 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 7 ms 33384 KB Output is correct
24 Correct 7 ms 33372 KB Output is correct
25 Correct 7 ms 33372 KB Output is correct
26 Correct 7 ms 33448 KB Output is correct
27 Correct 7 ms 33372 KB Output is correct
28 Correct 7 ms 33372 KB Output is correct
29 Correct 7 ms 33280 KB Output is correct
30 Correct 7 ms 33404 KB Output is correct
31 Correct 7 ms 33368 KB Output is correct
32 Correct 9 ms 33372 KB Output is correct
33 Correct 9 ms 33372 KB Output is correct
34 Correct 9 ms 33372 KB Output is correct
35 Correct 9 ms 33372 KB Output is correct
36 Correct 8 ms 33372 KB Output is correct
37 Correct 8 ms 33500 KB Output is correct
38 Correct 7 ms 33372 KB Output is correct
39 Correct 7 ms 33464 KB Output is correct
40 Correct 9 ms 33480 KB Output is correct
41 Correct 8 ms 33372 KB Output is correct
42 Correct 7 ms 33400 KB Output is correct
43 Correct 9 ms 33568 KB Output is correct
44 Correct 7 ms 33372 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 33112 KB Output is correct
2 Correct 6 ms 33272 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33116 KB Output is correct
5 Correct 5 ms 33116 KB Output is correct
6 Correct 6 ms 33220 KB Output is correct
7 Correct 5 ms 33116 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 33116 KB Output is correct
10 Correct 5 ms 33112 KB Output is correct
11 Correct 6 ms 33116 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 33368 KB Output is correct
14 Correct 6 ms 33308 KB Output is correct
15 Correct 5 ms 33116 KB Output is correct
16 Correct 5 ms 33196 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 6 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33356 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 7 ms 33384 KB Output is correct
24 Correct 7 ms 33372 KB Output is correct
25 Correct 7 ms 33372 KB Output is correct
26 Correct 7 ms 33448 KB Output is correct
27 Correct 7 ms 33372 KB Output is correct
28 Correct 7 ms 33372 KB Output is correct
29 Correct 7 ms 33280 KB Output is correct
30 Correct 7 ms 33404 KB Output is correct
31 Correct 7 ms 33368 KB Output is correct
32 Correct 9 ms 33372 KB Output is correct
33 Correct 9 ms 33372 KB Output is correct
34 Correct 9 ms 33372 KB Output is correct
35 Correct 9 ms 33372 KB Output is correct
36 Correct 8 ms 33372 KB Output is correct
37 Correct 8 ms 33500 KB Output is correct
38 Correct 7 ms 33372 KB Output is correct
39 Correct 7 ms 33464 KB Output is correct
40 Correct 9 ms 33480 KB Output is correct
41 Correct 8 ms 33372 KB Output is correct
42 Correct 7 ms 33400 KB Output is correct
43 Correct 9 ms 33568 KB Output is correct
44 Correct 7 ms 33372 KB Output is correct
45 Correct 333 ms 60992 KB Output is correct
46 Correct 323 ms 60704 KB Output is correct
47 Correct 318 ms 60536 KB Output is correct
48 Correct 323 ms 60872 KB Output is correct
49 Correct 304 ms 60352 KB Output is correct
50 Correct 310 ms 60540 KB Output is correct
51 Correct 324 ms 60296 KB Output is correct
52 Correct 346 ms 60820 KB Output is correct
53 Correct 339 ms 60596 KB Output is correct
54 Execution timed out 1590 ms 59852 KB Time limit exceeded
55 Halted 0 ms 0 KB -