oj.uz

답안 #1005343

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1005343 2024-06-22T10:41:42 Z amirhoseinfar1385 Nestabilnost (COI23_nestabilnost) C++17
61 / 100
 1500 ms 228436 KB 
#include<bits/stdc++.h>
using namespace std;
const long long maxn=300100+40,lg=20,kaf=(1<<lg);
vector<long long>adj[maxn];
long long sz[maxn],all[maxn],wa[maxn],n,inf=1e17,inf2=1e17;
int te=0;

struct segment{
	struct node{
		long long mina,lazy,vis,aval,asl;
		node(){
			mina=0;
			lazy=0;
			vis=0;
			aval=0;
			asl=inf;
		}
	};
	long long fen[maxn];
	node seg[(1<<(lg+1))];
	void ins(long long i,long long w){
		seg[kaf+i].mina=w;
		seg[kaf+i].aval=w;
		fen[i]=w;
	}
	void build(){
		for(long long i=kaf-1;i>=1;i--){
			seg[i].mina=min(seg[(i<<1)].mina,seg[(i<<1)^1].mina);
			seg[i].aval=seg[i].mina;
		}
	}
	void calc(long long i){
		seg[i].vis=1;
		if(i>=kaf){
			seg[i].mina+=seg[i].lazy;
			seg[i].lazy=0;
			return ;
		}
		seg[i].mina=min(seg[(i<<1)].mina+seg[(i<<1)].lazy,seg[(i<<1)^1].lazy+seg[(i<<1)^1].mina);
	}
	void calcasl(int i){
		seg[i].vis=1;
		if(i>=kaf){
			seg[i].mina+=seg[i].lazy;
			seg[i].lazy=0;
			seg[i].mina=min(seg[i].mina,seg[i].asl+seg[i].aval);
			seg[i].asl=inf;
			return ;
		}
		seg[(i<<1)].vis=seg[(i<<1)^1].vis=1;
		seg[(i<<1)].lazy+=seg[i].lazy;
		seg[(i<<1)^1].lazy+=seg[i].lazy;
		seg[i].lazy=0;
		calc(i);
		seg[i].mina=min(seg[i].mina,seg[i].asl+seg[i].aval);
	}
	void shift(long long i){
		if(seg[i].asl==inf){
			seg[i].vis=1;
			if(i>=kaf){
				return ;
			}
			seg[(i<<1)].vis=seg[(i<<1)^1].vis=1;
			seg[(i<<1)].lazy+=seg[i].lazy;
			seg[(i<<1)^1].lazy+=seg[i].lazy;
			seg[i].lazy=0;
			calc(i);
		}else{
			seg[i].vis=seg[(i<<1)].vis=seg[(i<<1)^1].vis=1;
		//	seg[(i<<1)].asl=seg[i].asl;
		//	seg[(i<<1)^1].asl=seg[i].asl;
		//	calcasl((i<<1));
		//	calcasl((i<<1)^1);
			if(seg[(i<<1)].asl+seg[(i<<1)].lazy>=seg[i].asl){
				seg[(i<<1)].asl=seg[i].asl;
				calcasl((i<<1));
			}
			if(seg[(i<<1)^1].asl+seg[(i<<1)^1].lazy>=seg[i].asl){
				seg[(i<<1)^1].asl=seg[i].asl;
				calcasl((i<<1)^1);
			}
			seg[i].asl=inf;
			seg[(i<<1)].lazy+=seg[i].lazy;
			seg[(i<<1)^1].lazy+=seg[i].lazy;
			seg[i].lazy=0;
			calc(i);
		}
	}
	void push(long long i,long long l,long long r,long long tl,long long tr,long long w){
		if(l>r||l>tr||r<tl||tl>tr){
			return ;
		}
		if(l>=tl&&r<=tr){
			shift(i);
			calc(i);
			seg[i].asl=w;
			calcasl(i);
			shift(i);
			calc(i);
			return ;
		}
		shift(i);
		long long m=(l+r)>>1;
		push((i<<1),l,m,tl,tr,w);
		push((i<<1)^1,m+1,r,tl,tr,w);
		calc(i);
	}
	void upd(long long i,long long l,long long r,long long tl,long long tr,long long w){
		if(l>r||l>tr||r<tl||tl>tr){
			return ;
		}
		if(l>=tl&&r<=tr){
			shift(i);
			calc(i);
			seg[i].lazy+=w;
			shift(i);
			calc(i);
			return ;
		}
		shift(i);
		long long m=(l+r)>>1;
		upd((i<<1),l,m,tl,tr,w);
		upd((i<<1)^1,m+1,r,tl,tr,w);
		calc(i);
	}
	long long getmin(long long i,long long l,long long r,long long tl,long long tr){
		if(l>r||l>tr||r<tl||tl>tr){
			return inf;
		}
		shift(i);
		calc(i);
		if(l>=tl&&r<=tr){
			return seg[i].mina+seg[i].lazy;
		}
		long long m=(l+r)>>1;
		return min(getmin((i<<1),l,m,tl,tr),getmin((i<<1)^1,m+1,r,tl,tr));
	}
	void clear(long long i=1,int l=0,int r=kaf-1,int tl=1,int tr=n+10){
		if(l>r||l>tr||r<tl||tl>tr||seg[i].vis==0){
			return ;
		}
		if(l>=tl&&r<=tr){
			seg[i].vis=0;
			seg[i].mina=seg[i].aval;
			seg[i].lazy=0;
			seg[i].asl=inf;
		}else{
			shift(i);
		}
		if(l==r){
			if(!(l>=tl&&r<=tr)){
				calc(i);
			}
			return ;
		}
		int m=(l+r)>>1;
		clear((i<<1),l,m,tl,tr);
		clear((i<<1)^1,m+1,r,tl,tr);
		if(!(l>=tl&&r<=tr)){
			calc(i);
		}
	}
}seg;
 
bool cmp(long long a,long long b){
	return sz[a]>sz[b];
}
 
void predfs(long long u,long long par=-1){
	if(par!=-1){
		sort(adj[u].begin(),adj[u].end());
		adj[u].erase(lower_bound(adj[u].begin(),adj[u].end(),par));
	}
	sz[u]=1;
	for(auto x:adj[u]){
		predfs(x,u);
		sz[u]+=sz[x];
	}
	sort(adj[u].begin(),adj[u].end(),cmp);
}
 
void vorod(){
	cin>>n;
	for(long long i=1;i<=n;i++){
		cin>>all[i];
	}
	for(long long i=1;i<=n;i++){
		cin>>wa[i];
	}
	for(long long i=0;i<n-1;i++){
		long long u,v;
		cin>>u>>v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
}
 
void pre(){
	predfs(1);
	for(long long i=1;i<=n;i++){
		seg.ins(i,wa[i]);
	}
	seg.build();
}
set<long long>allind[maxn];
long long mainres=0;
 
long long dfs(long long u){
	long long ret=0;
	vector<pair<pair<long long,long long>,long long>>alle;
	for(long long i=1;i<(long long)adj[u].size();i++){
		long long v=adj[u][i];
		long long re=dfs(v);
		if(all[v]!=0&&all[v]-1!=all[u]){
			mainres+=re;
			seg.clear();
			continue;
		}
		allind[v].insert(all[u]+1);
		allind[v].insert(all[u]+2);
		allind[v].insert(1);
		deque<long long>tof;
		for(auto x:allind[v]){
			tof.push_back(x);
		}
		tof.push_back(n+1);
		if(all[v]==all[u]+1){
			seg.upd(1,0,kaf-1,1,all[v],inf2);
		}else{
			seg.upd(1,0,kaf-1,1,all[u],inf2);
			seg.upd(1,0,kaf-1,all[u]+2,n,inf2);
		}
		for(long long i=0;i<(long long)tof.size()-1;i++){
			if(tof[i+1]==tof[i]){
				continue;
			}
			long long w=seg.getmin(1,0,kaf-1,tof[i],tof[i])-wa[tof[i]];
			w=min(re,w);
			if(tof[i]<=all[v]){
				w=re;
			}
			alle.push_back(make_pair(make_pair(tof[i],tof[i+1]-1),w));
		}
		seg.clear();
	}
	if((int)adj[u].size()==0){
		allind[u].insert(1);
		return seg.getmin(1,0,kaf-1,all[u]+1,n);
	}
	long long v=adj[u][0];
	long long re=dfs(v);
	//wrf: 
	//for(int i=1;i<=n;i++){
	//	if(seg.fen[i]>re+wa[i]){
	//		seg.fen[i]=re+wa[i];
	//	}
	//}
	seg.push(1,0,kaf-1,1,n,re);
	if(all[v]!=0&&all[v]-1!=all[u]){
		mainres+=re;
		seg.clear();
	}else{
		swap(allind[u],allind[v]);
		allind[u].insert(all[u]+1);
		allind[u].insert(all[u]+2);
		if(all[v]==all[u]+1){
			seg.clear(1,0,kaf-1,1,all[v]);
			seg.upd(1,0,kaf-1,1,all[v],re);
		}else{
			seg.clear(1,0,kaf-1,1,all[u]);
			seg.clear(1,0,kaf-1,all[u]+2,n);
			seg.upd(1,0,kaf-1,1,all[u],re);
			seg.upd(1,0,kaf-1,all[u]+2,n,re);
		}
	}
	for(auto x:alle){
		allind[u].insert(x.first.first);
		allind[u].insert(x.first.second+1);
		seg.upd(1,0,kaf-1,x.first.first,x.first.second,x.second);
	}
	ret+=seg.getmin(1,0,kaf-1,all[u]+1,n);
	return ret;
}
 
void solve(){
	mainres+=dfs(1);
	cout<<mainres<<"\n";
}
 
 
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
//	freopen("inp.txt","r",stdin);
//	freopen("out.txt","w",stdout);
	vorod();
	pre();
	solve();
}

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 112732 KB Output is correct
2 Correct 32 ms 112732 KB Output is correct
3 Correct 33 ms 112720 KB Output is correct
4 Correct 33 ms 112704 KB Output is correct
5 Correct 36 ms 112732 KB Output is correct
6 Correct 31 ms 112568 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1162 ms 218576 KB Output is correct
2 Correct 850 ms 218744 KB Output is correct
3 Correct 935 ms 219168 KB Output is correct
4 Correct 1180 ms 228436 KB Output is correct
5 Correct 1020 ms 218372 KB Output is correct
6 Correct 1016 ms 218568 KB Output is correct
7 Correct 1031 ms 218516 KB Output is correct
8 Correct 1073 ms 218704 KB Output is correct
9 Correct 1097 ms 221012 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 110940 KB Output is correct
2 Correct 18 ms 110940 KB Output is correct
3 Correct 19 ms 110940 KB Output is correct
4 Correct 18 ms 110940 KB Output is correct
5 Correct 17 ms 110964 KB Output is correct
6 Correct 17 ms 110936 KB Output is correct
7 Correct 17 ms 110940 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 112732 KB Output is correct
2 Correct 32 ms 112732 KB Output is correct
3 Correct 33 ms 112720 KB Output is correct
4 Correct 33 ms 112704 KB Output is correct
5 Correct 36 ms 112732 KB Output is correct
6 Correct 31 ms 112568 KB Output is correct
7 Correct 17 ms 110940 KB Output is correct
8 Correct 18 ms 110940 KB Output is correct
9 Correct 19 ms 110940 KB Output is correct
10 Correct 18 ms 110940 KB Output is correct
11 Correct 17 ms 110964 KB Output is correct
12 Correct 17 ms 110936 KB Output is correct
13 Correct 17 ms 110940 KB Output is correct
14 Correct 40 ms 111744 KB Output is correct
15 Correct 37 ms 111580 KB Output is correct
16 Correct 37 ms 111708 KB Output is correct
17 Correct 38 ms 111700 KB Output is correct
18 Correct 38 ms 111828 KB Output is correct
19 Correct 36 ms 111984 KB Output is correct
20 Correct 35 ms 111452 KB Output is correct
21 Correct 36 ms 111448 KB Output is correct
22 Correct 31 ms 111448 KB Output is correct
23 Correct 35 ms 111444 KB Output is correct
24 Correct 43 ms 111708 KB Output is correct
25 Correct 35 ms 111704 KB Output is correct
26 Correct 36 ms 111956 KB Output is correct
27 Correct 37 ms 111956 KB Output is correct

Subtask #5
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 112732 KB Output is correct
2 Correct 32 ms 112732 KB Output is correct
3 Correct 33 ms 112720 KB Output is correct
4 Correct 33 ms 112704 KB Output is correct
5 Correct 36 ms 112732 KB Output is correct
6 Correct 31 ms 112568 KB Output is correct
7 Correct 1162 ms 218576 KB Output is correct
8 Correct 850 ms 218744 KB Output is correct
9 Correct 935 ms 219168 KB Output is correct
10 Correct 1180 ms 228436 KB Output is correct
11 Correct 1020 ms 218372 KB Output is correct
12 Correct 1016 ms 218568 KB Output is correct
13 Correct 1031 ms 218516 KB Output is correct
14 Correct 1073 ms 218704 KB Output is correct
15 Correct 1097 ms 221012 KB Output is correct
16 Correct 17 ms 110940 KB Output is correct
17 Correct 18 ms 110940 KB Output is correct
18 Correct 19 ms 110940 KB Output is correct
19 Correct 18 ms 110940 KB Output is correct
20 Correct 17 ms 110964 KB Output is correct
21 Correct 17 ms 110936 KB Output is correct
22 Correct 17 ms 110940 KB Output is correct
23 Correct 40 ms 111744 KB Output is correct
24 Correct 37 ms 111580 KB Output is correct
25 Correct 37 ms 111708 KB Output is correct
26 Correct 38 ms 111700 KB Output is correct
27 Correct 38 ms 111828 KB Output is correct
28 Correct 36 ms 111984 KB Output is correct
29 Correct 35 ms 111452 KB Output is correct
30 Correct 36 ms 111448 KB Output is correct
31 Correct 31 ms 111448 KB Output is correct
32 Correct 35 ms 111444 KB Output is correct
33 Correct 43 ms 111708 KB Output is correct
34 Correct 35 ms 111704 KB Output is correct
35 Correct 36 ms 111956 KB Output is correct
36 Correct 37 ms 111956 KB Output is correct
37 Correct 1352 ms 146404 KB Output is correct
38 Correct 1373 ms 160084 KB Output is correct
39 Correct 1400 ms 161412 KB Output is correct
40 Execution timed out 1548 ms 161624 KB Time limit exceeded
41 Halted 0 ms 0 KB -