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답안 #238479

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
238479 2020-06-11T13:55:11 Z kshitij_sodani 별자리 3 (JOI20_constellation3) C++17
100 / 100
 327 ms 48724 KB 
#include <bits/stdc++.h>
using namespace std;
typedef int64_t llo;
#define mp make_pair
#define pb push_back
#define a first
#define b second
llo n,m;
//#define endl '\n'
llo it[200001];
llo aa,bb,cc;
llo tree[800001];
llo build(llo no,llo l,llo r){
	if(l==r){
		tree[no]=it[l];
	}
	else{
		llo mid=(l+r)/2;
		build(no*2+1,l,mid);
		build(no*2+2,mid+1,r);
		tree[no]=max(tree[no*2+1],tree[no*2+2]);
	}
}
llo query(llo no,llo l,llo r,llo aa,llo bb,llo x){
	if(r<aa or l>bb or aa>bb){
		return n;
	}
	if(tree[no]<x){
		return n;
	}
	if(l==r){
		return l;
	}
	llo mid=(l+r)/2;
	llo xx=query(no*2+1,l,mid,aa,bb,x);
	if(xx<n){
		return xx;
	}
	return query(no*2+2,mid+1,r,aa,bb,x);
}
llo query2(llo no,llo l,llo r,llo aa,llo bb,llo x){
	if(r<aa or l>bb or aa>bb){
		return -1;
	}
	if(tree[no]<x){
		return -1;
	}
	if(l==r){
		return l;
	}
	llo mid=(l+r)/2;
	llo xx=query2(no*2+2,mid+1,r,aa,bb,x);
	if(xx>-1){
		return xx;
	}
	return query2(no*2+1,l,mid,aa,bb,x);
}
vector<llo> adj[200001];
vector<pair<pair<llo,llo>,pair<llo,llo>>> dd;
llo dp[200001];
llo vis[200001];
llo tree2[200001];
void u(llo i,llo j){
	while(i<=200000){
		tree2[i]+=j;
		i+=(i&(-i));
	}
}
llo ss(llo i){
	llo tot=0;
	while(i>0){
		tot+=tree2[i];
		i-=(i&-i);
	}
	return tot;
}
llo dfs(llo no,llo par=-1){
	dp[no]=0;
	vis[no]=1;
	for(auto j:adj[no]){
		dfs(j,no);
		dp[no]+=dp[j];
	}

	for(auto j:adj[no]){
		u(dd[j].a.b+2,dp[j]);
		u(dd[no].a.b+2,-dp[j]);
//		cout<<dd[j].a.b+2<<" "<<dd[no].a.b+1<<endl;
		u(dd[no].a.a+1,dp[j]);
		u(dd[j].a.a+1,-dp[j]);
//		cout<<dd[no].a.a+1<<" "<<dd[j].a.a<<endl;
	}
	dp[no]=max(dp[no],ss(dd[no].b.a+1)+dd[no].b.b);
//	cout<<dd[no].b.a+1<<":::"<<ss(dd[no].b.a+1)<<endl;

//	cout<<no<<","<<dp[no]<<endl;
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	llo su2=0;
	for(llo i=0;i<n;i++){
		cin>>it[i];
	}
	cin>>m;
	build(0,0,n-1);
	
	for(llo i=0;i<m;i++){
		cin>>aa>>bb>>cc;
		su2+=cc;
		llo ind=query2(0,0,n-1,0,aa-2,bb);
		llo ind2=query(0,0,n-1,aa,n-1,bb);
	//	cout<<ind<<"<"<<ind2<<endl;
		dd.pb({{ind+1,-(ind2-1)},{aa-1,cc}});
	}
	sort(dd.begin(),dd.end());
	for(llo i=0;i<m;i++){
		dd[i].a.b=-dd[i].a.b;
	}
/*	for(auto j:dd){
		cout<<j.a.a<<","<<j.a.b<<","<<j.b.a<<","<<j.b.b<<endl;
	}*/
	stack<pair<pair<llo,llo>,llo>> ac; 
	for(llo i=0;i<m;i++){
		pair<pair<llo,llo>,pair<llo,llo>> kk=dd[i];
		while(ac.size()){
			if(ac.top().a.b<kk.a.b){
				ac.pop();
			}			
			else{
				adj[ac.top().b].pb(i);
			//	cout<<ac.top().b<<":"<<i<<endl;
				break;
			}
		}
		ac.push({kk.a,i});
	}
	llo ans=0;
	for(llo i=0;i<m;i++){
		if(vis[i]==0){
			dfs(i);
			ans+=dp[i];
		}
	}

	cout<<su2-ans<<endl;
	return 0;
}

Compilation message

constellation3.cpp: In function 'llo build(llo, llo, llo)':
constellation3.cpp:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
constellation3.cpp: In function 'llo dfs(llo, llo)':
constellation3.cpp:98:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5248 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 7 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5248 KB Output is correct
15 Correct 8 ms 5120 KB Output is correct
16 Correct 8 ms 5248 KB Output is correct
17 Correct 9 ms 5120 KB Output is correct
18 Correct 9 ms 5248 KB Output is correct
19 Correct 8 ms 5248 KB Output is correct
20 Correct 8 ms 5120 KB Output is correct
21 Correct 8 ms 5248 KB Output is correct
22 Correct 7 ms 5120 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5248 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 7 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5248 KB Output is correct
15 Correct 8 ms 5120 KB Output is correct
16 Correct 8 ms 5248 KB Output is correct
17 Correct 9 ms 5120 KB Output is correct
18 Correct 9 ms 5248 KB Output is correct
19 Correct 8 ms 5248 KB Output is correct
20 Correct 8 ms 5120 KB Output is correct
21 Correct 8 ms 5248 KB Output is correct
22 Correct 7 ms 5120 KB Output is correct
23 Correct 10 ms 5376 KB Output is correct
24 Correct 10 ms 5376 KB Output is correct
25 Correct 9 ms 5376 KB Output is correct
26 Correct 10 ms 5376 KB Output is correct
27 Correct 10 ms 5376 KB Output is correct
28 Correct 10 ms 5376 KB Output is correct
29 Correct 10 ms 5376 KB Output is correct
30 Correct 9 ms 5376 KB Output is correct
31 Correct 11 ms 5376 KB Output is correct
32 Correct 11 ms 5504 KB Output is correct
33 Correct 10 ms 5504 KB Output is correct
34 Correct 9 ms 5504 KB Output is correct
35 Correct 9 ms 5504 KB Output is correct
36 Correct 9 ms 5632 KB Output is correct
37 Correct 9 ms 5632 KB Output is correct
38 Correct 9 ms 5632 KB Output is correct
39 Correct 9 ms 5376 KB Output is correct
40 Correct 9 ms 5504 KB Output is correct
41 Correct 13 ms 5352 KB Output is correct
42 Correct 9 ms 5376 KB Output is correct
43 Correct 11 ms 5608 KB Output is correct
44 Correct 12 ms 5376 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 8 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 7 ms 5248 KB Output is correct
9 Correct 8 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 7 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 7 ms 5120 KB Output is correct
14 Correct 8 ms 5248 KB Output is correct
15 Correct 8 ms 5120 KB Output is correct
16 Correct 8 ms 5248 KB Output is correct
17 Correct 9 ms 5120 KB Output is correct
18 Correct 9 ms 5248 KB Output is correct
19 Correct 8 ms 5248 KB Output is correct
20 Correct 8 ms 5120 KB Output is correct
21 Correct 8 ms 5248 KB Output is correct
22 Correct 7 ms 5120 KB Output is correct
23 Correct 10 ms 5376 KB Output is correct
24 Correct 10 ms 5376 KB Output is correct
25 Correct 9 ms 5376 KB Output is correct
26 Correct 10 ms 5376 KB Output is correct
27 Correct 10 ms 5376 KB Output is correct
28 Correct 10 ms 5376 KB Output is correct
29 Correct 10 ms 5376 KB Output is correct
30 Correct 9 ms 5376 KB Output is correct
31 Correct 11 ms 5376 KB Output is correct
32 Correct 11 ms 5504 KB Output is correct
33 Correct 10 ms 5504 KB Output is correct
34 Correct 9 ms 5504 KB Output is correct
35 Correct 9 ms 5504 KB Output is correct
36 Correct 9 ms 5632 KB Output is correct
37 Correct 9 ms 5632 KB Output is correct
38 Correct 9 ms 5632 KB Output is correct
39 Correct 9 ms 5376 KB Output is correct
40 Correct 9 ms 5504 KB Output is correct
41 Correct 13 ms 5352 KB Output is correct
42 Correct 9 ms 5376 KB Output is correct
43 Correct 11 ms 5608 KB Output is correct
44 Correct 12 ms 5376 KB Output is correct
45 Correct 287 ms 27324 KB Output is correct
46 Correct 288 ms 26844 KB Output is correct
47 Correct 294 ms 27648 KB Output is correct
48 Correct 294 ms 26924 KB Output is correct
49 Correct 282 ms 27000 KB Output is correct
50 Correct 323 ms 26780 KB Output is correct
51 Correct 288 ms 27196 KB Output is correct
52 Correct 297 ms 27320 KB Output is correct
53 Correct 279 ms 26812 KB Output is correct
54 Correct 308 ms 48724 KB Output is correct
55 Correct 312 ms 48428 KB Output is correct
56 Correct 312 ms 48052 KB Output is correct
57 Correct 327 ms 48352 KB Output is correct
58 Correct 303 ms 47548 KB Output is correct
59 Correct 277 ms 47780 KB Output is correct
60 Correct 209 ms 48284 KB Output is correct
61 Correct 271 ms 30872 KB Output is correct
62 Correct 294 ms 48212 KB Output is correct
63 Correct 265 ms 31444 KB Output is correct
64 Correct 255 ms 29908 KB Output is correct
65 Correct 283 ms 47192 KB Output is correct
66 Correct 270 ms 32392 KB Output is correct