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답안 #259655

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
259655 2020-08-08T07:04:24 Z kshitij_sodani Palembang Bridges (APIO15_bridge) C++14
100 / 100
 1419 ms 47416 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
llo k,n;
map<llo,llo> ind;
llo ind2[200001];
llo pre[100001];
llo pre2[100001];
llo tree3[300001];
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define ord tree<pair<llo,llo>,null_type,less<pair<llo,llo>>,rb_tree_tag,tree_order_statistics_node_update>

void u(llo i,llo j){
	while(i<300001){
		tree3[i]+=j;
		i+=(i&-i);
	}
}
llo s(llo i){
	llo su=0;
	while(i>0){
		su+=tree3[i];
		i-=(i&-i);
	}
	return su;
}
llo tree2[300001];
void u2(llo i,llo j){
	while(i<300001){
		tree2[i]+=j;
		i+=(i&-i);
	}
}
llo s2(llo i){
	llo su=0;
	while(i>0){
		su+=tree2[i];
		i-=(i&-i);
	}
	return su;
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>k>>n;
	set<llo> cur;
	vector<pair<llo,pair<llo,llo>>> ss;
	llo ans=0;
	llo nn=n;
	for(llo i=0;i<n;i++){
		char so,t;
		llo aa,bb;
		cin>>so>>aa>>t>>bb;
		if(so==t){
			ans+=abs(aa-bb);
			nn-=1;
			continue;
		}
		ans+=1;
		//cout<<so<<":"<<aa<<":"<<t<<":"<<bb<<endl;
		cur.insert(aa);
		cur.insert(bb);
		ss.pb({aa+bb,{aa,bb}});
	}
	if(nn==0){
		cout<<ans<<endl;
		return 0;
	}
	n=nn;
	llo ii=0;
	for(auto j:cur){
		ind[j]=ii;
		ind2[ii]=j;
		ii+=1;
	}

	sort(ss.begin(),ss.end());
	llo co=0;
	ord cur2;
	for(llo i=0;i<n;i++){
		co+=2;
		u(ind[ss[i].b.a]+1,ss[i].b.a);
		u(ind[ss[i].b.b]+1,ss[i].b.b);
		u2(ind[ss[i].b.a]+1,1);
		u2(ind[ss[i].b.b]+1,1);
		cur2.insert({ind[ss[i].b.a],i*2});
		cur2.insert({ind[ss[i].b.b],i*2+1});
		pair<llo,llo> y=*cur2.find_by_order(co/2-1);
	//	cout<<y.a<<":"<<y.b<<endl;
		llo ind3=y.a;
	//	cout<<y.a<<","<<y.b<<endl;
	//	cout<<ind2[ind3]<<endl;
		llo ss3=s2(ind3+1);
		llo ss2=s(ind3+1);
		llo cost=ss3*ind2[ind3]-ss2;
	//	cout<<cost<<endl;
	//	cout<<cost<<endl;
		llo co2=s(2*n+1)-s(ind3+1);
		llo co3=s2(2*n+1)-s2(ind3+1);
	//	cout<<co2<<"::"<<co3<<endl;
		cost+=co2-ind2[ind3]*co3;

		pre[i]=cost;
//		cout<<pre[i]<<"/"<<endl;
	//	cout<<ss[i].a<<":"<<ss[i].b.a<<":"<<ss[i].b.b<<endl;
	//	cout<<cost<<endl;
	}
//	cout<<endl;
	memset(tree3,0,sizeof(tree3));
	memset(tree2,0,sizeof(tree2));
	co=0;
	cur2.clear();
	for(llo i=n-1;i>=0;i--){
		co+=2;
		u(ind[ss[i].b.a]+1,ss[i].b.a);
		u(ind[ss[i].b.b]+1,ss[i].b.b);
		u2(ind[ss[i].b.a]+1,1);
		u2(ind[ss[i].b.b]+1,1);
		cur2.insert({ind[ss[i].b.a],i*2});
		cur2.insert({ind[ss[i].b.b],i*2+1});
		pair<llo,llo> y=*cur2.find_by_order(co/2-1);
	//	cout<<y.a<<":"<<y.b<<endl;
		llo ind3=y.a;
	//	cout<<y.a<<","<<y.b<<endl;
	//	cout<<ind2[ind3]<<endl;
		llo ss3=s2(ind3+1);
		llo ss2=s(ind3+1);
		llo cost=ss3*ind2[ind3]-ss2;
	//	cout<<cost<<endl;
	//	cout<<cost<<endl;
		llo co2=s(2*n+1)-s(ind3+1);
		llo co3=s2(2*n+1)-s2(ind3+1);
	//	cout<<co2<<"::"<<co3<<endl;
		cost+=co2-ind2[ind3]*co3;

		pre2[i]=cost;
	//	cout<<pre[i]<<"/"<<endl;
	//	cout<<ss[i].a<<":"<<ss[i].b.a<<":"<<ss[i].b.b<<endl;
	//	cout<<cost<<endl;
	}

	if(k==1){
		cout<<pre[n-1]+ans<<endl;
	}
	else{
		llo ans2=pre[n-1];
		

		for(llo i=0;i<n-1;i++){
			ans2=min(ans2,pre[i]+pre2[i+1]);
		}
	//	cout<<ans2<<endl;
		cout<<ans2+ans<<endl;
	}







	return 0;
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 6 ms 5248 KB Output is correct
4 Correct 8 ms 5504 KB Output is correct
5 Correct 7 ms 5504 KB Output is correct
6 Correct 6 ms 5248 KB Output is correct
7 Correct 8 ms 5504 KB Output is correct
8 Correct 7 ms 5504 KB Output is correct
9 Correct 8 ms 5504 KB Output is correct
10 Correct 6 ms 5248 KB Output is correct
11 Correct 7 ms 5504 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 5 ms 5376 KB Output is correct
4 Correct 7 ms 5504 KB Output is correct
5 Correct 7 ms 5504 KB Output is correct
6 Correct 5 ms 5248 KB Output is correct
7 Correct 6 ms 5504 KB Output is correct
8 Correct 7 ms 5504 KB Output is correct
9 Correct 7 ms 5504 KB Output is correct
10 Correct 5 ms 5248 KB Output is correct
11 Correct 6 ms 5504 KB Output is correct
12 Correct 338 ms 22368 KB Output is correct
13 Correct 1419 ms 47416 KB Output is correct
14 Correct 644 ms 22148 KB Output is correct
15 Correct 600 ms 29928 KB Output is correct
16 Correct 398 ms 23140 KB Output is correct
17 Correct 627 ms 47376 KB Output is correct
18 Correct 638 ms 46880 KB Output is correct
19 Correct 647 ms 46216 KB Output is correct
20 Correct 405 ms 23396 KB Output is correct
21 Correct 622 ms 47120 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 3 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 3 ms 5120 KB Output is correct
9 Correct 3 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 3 ms 5120 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 3 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 3 ms 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 3 ms 5120 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 3 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 3 ms 5120 KB Output is correct
13 Correct 5 ms 5248 KB Output is correct
14 Correct 6 ms 5248 KB Output is correct
15 Correct 7 ms 5504 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct
19 Correct 5 ms 5248 KB Output is correct
20 Correct 6 ms 5504 KB Output is correct
21 Correct 7 ms 5504 KB Output is correct
22 Correct 6 ms 5504 KB Output is correct
23 Correct 6 ms 5248 KB Output is correct
24 Correct 7 ms 5504 KB Output is correct

Subtask #5
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 3 ms 5120 KB Output is correct
4 Correct 3 ms 5120 KB Output is correct
5 Correct 3 ms 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 3 ms 5120 KB Output is correct
9 Correct 3 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 5120 KB Output is correct
13 Correct 6 ms 5248 KB Output is correct
14 Correct 6 ms 5248 KB Output is correct
15 Correct 9 ms 5504 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5248 KB Output is correct
19 Correct 5 ms 5248 KB Output is correct
20 Correct 7 ms 5504 KB Output is correct
21 Correct 7 ms 5504 KB Output is correct
22 Correct 7 ms 5504 KB Output is correct
23 Correct 5 ms 5248 KB Output is correct
24 Correct 7 ms 5504 KB Output is correct
25 Correct 366 ms 22240 KB Output is correct
26 Correct 356 ms 22496 KB Output is correct
27 Correct 1249 ms 44616 KB Output is correct
28 Correct 1256 ms 47392 KB Output is correct
29 Correct 1237 ms 47268 KB Output is correct
30 Correct 516 ms 27516 KB Output is correct
31 Correct 391 ms 23136 KB Output is correct
32 Correct 590 ms 47392 KB Output is correct
33 Correct 583 ms 47012 KB Output is correct
34 Correct 608 ms 46248 KB Output is correct
35 Correct 379 ms 23392 KB Output is correct
36 Correct 615 ms 47140 KB Output is correct
37 Correct 384 ms 22240 KB Output is correct