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답안 #895173

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895173 2023-12-29T14:06:31 Z amirhoseinfar1385 별자리 3 (JOI20_constellation3) C++17
100 / 100
 479 ms 68036 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;
	res+=val2s.pors(1,0,kaf-1,allq[ind].x,allq[ind].r-1);
//	for(long long i=allq[ind].x;i<allq[ind].r;i++){
//		res+=val2[i].second;
//	}
	maxa=-1;
	res+=val2f.pors(1,0,kaf-1,allq[ind].l+1,allq[ind].x);
//	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);
	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);
	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:114:18: warning: variable 'maxa' set but not used [-Wunused-but-set-variable]
  114 |  long long res=0,maxa=-1;
      |                  ^~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Correct 7 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33220 KB Output is correct
5 Correct 6 ms 33200 KB Output is correct
6 Correct 5 ms 33368 KB Output is correct
7 Correct 7 ms 33476 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 33116 KB Output is correct
11 Correct 5 ms 33216 KB Output is correct
12 Correct 5 ms 33308 KB Output is correct
13 Correct 5 ms 33188 KB Output is correct
14 Correct 6 ms 33116 KB Output is correct
15 Correct 5 ms 33196 KB Output is correct
16 Correct 5 ms 33344 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 5 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33116 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 5 ms 33116 KB Output is correct
2 Correct 7 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33220 KB Output is correct
5 Correct 6 ms 33200 KB Output is correct
6 Correct 5 ms 33368 KB Output is correct
7 Correct 7 ms 33476 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 33116 KB Output is correct
11 Correct 5 ms 33216 KB Output is correct
12 Correct 5 ms 33308 KB Output is correct
13 Correct 5 ms 33188 KB Output is correct
14 Correct 6 ms 33116 KB Output is correct
15 Correct 5 ms 33196 KB Output is correct
16 Correct 5 ms 33344 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 5 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33116 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 7 ms 33372 KB Output is correct
24 Correct 7 ms 33368 KB Output is correct
25 Correct 7 ms 33880 KB Output is correct
26 Correct 7 ms 33372 KB Output is correct
27 Correct 7 ms 33472 KB Output is correct
28 Correct 9 ms 33368 KB Output is correct
29 Correct 7 ms 33372 KB Output is correct
30 Correct 7 ms 33428 KB Output is correct
31 Correct 8 ms 33372 KB Output is correct
32 Correct 8 ms 33408 KB Output is correct
33 Correct 8 ms 33368 KB Output is correct
34 Correct 8 ms 33400 KB Output is correct
35 Correct 7 ms 33372 KB Output is correct
36 Correct 7 ms 33504 KB Output is correct
37 Correct 8 ms 33372 KB Output is correct
38 Correct 7 ms 33372 KB Output is correct
39 Correct 7 ms 33372 KB Output is correct
40 Correct 8 ms 33372 KB Output is correct
41 Correct 7 ms 33624 KB Output is correct
42 Correct 8 ms 33372 KB Output is correct
43 Correct 7 ms 33568 KB Output is correct
44 Correct 8 ms 33372 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 33116 KB Output is correct
2 Correct 7 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 33220 KB Output is correct
5 Correct 6 ms 33200 KB Output is correct
6 Correct 5 ms 33368 KB Output is correct
7 Correct 7 ms 33476 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 33116 KB Output is correct
11 Correct 5 ms 33216 KB Output is correct
12 Correct 5 ms 33308 KB Output is correct
13 Correct 5 ms 33188 KB Output is correct
14 Correct 6 ms 33116 KB Output is correct
15 Correct 5 ms 33196 KB Output is correct
16 Correct 5 ms 33344 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 5 ms 33116 KB Output is correct
19 Correct 5 ms 33116 KB Output is correct
20 Correct 6 ms 33116 KB Output is correct
21 Correct 6 ms 33116 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 7 ms 33372 KB Output is correct
24 Correct 7 ms 33368 KB Output is correct
25 Correct 7 ms 33880 KB Output is correct
26 Correct 7 ms 33372 KB Output is correct
27 Correct 7 ms 33472 KB Output is correct
28 Correct 9 ms 33368 KB Output is correct
29 Correct 7 ms 33372 KB Output is correct
30 Correct 7 ms 33428 KB Output is correct
31 Correct 8 ms 33372 KB Output is correct
32 Correct 8 ms 33408 KB Output is correct
33 Correct 8 ms 33368 KB Output is correct
34 Correct 8 ms 33400 KB Output is correct
35 Correct 7 ms 33372 KB Output is correct
36 Correct 7 ms 33504 KB Output is correct
37 Correct 8 ms 33372 KB Output is correct
38 Correct 7 ms 33372 KB Output is correct
39 Correct 7 ms 33372 KB Output is correct
40 Correct 8 ms 33372 KB Output is correct
41 Correct 7 ms 33624 KB Output is correct
42 Correct 8 ms 33372 KB Output is correct
43 Correct 7 ms 33568 KB Output is correct
44 Correct 8 ms 33372 KB Output is correct
45 Correct 398 ms 60992 KB Output is correct
46 Correct 375 ms 60616 KB Output is correct
47 Correct 383 ms 60612 KB Output is correct
48 Correct 365 ms 60872 KB Output is correct
49 Correct 418 ms 60304 KB Output is correct
50 Correct 374 ms 60356 KB Output is correct
51 Correct 382 ms 60616 KB Output is correct
52 Correct 437 ms 60896 KB Output is correct
53 Correct 368 ms 60792 KB Output is correct
54 Correct 409 ms 60928 KB Output is correct
55 Correct 479 ms 66776 KB Output is correct
56 Correct 387 ms 65832 KB Output is correct
57 Correct 422 ms 65904 KB Output is correct
58 Correct 352 ms 64704 KB Output is correct
59 Correct 350 ms 64824 KB Output is correct
60 Correct 205 ms 68036 KB Output is correct
61 Correct 365 ms 65576 KB Output is correct
62 Correct 439 ms 65648 KB Output is correct
63 Correct 339 ms 65852 KB Output is correct
64 Correct 311 ms 64968 KB Output is correct
65 Correct 384 ms 65476 KB Output is correct
66 Correct 333 ms 65736 KB Output is correct