답안 #49227 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
49227	2018-05-24T00:25:16 Z	spencercompton	Construction of Highway (JOI18_construction)	C++17	16 / 100	780 ms	3988 KB

construction

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int l[100000];
int r[100000];
int p[100000];
int sub[100000];
int pri[100000];
int val[100000];
int par[100000];
void pull(int t){
	sub[t] = 1;
	if(l[t]!=-1){
		sub[t] += sub[l[t]];
		p[l[t]] = t;
	}
	if(r[t]!=-1){
		sub[t] += sub[r[t]];
		p[r[t]] = t;
	}
}
void push(int t){
	if(l[t]!=-1){
		val[l[t]] = val[t];
	}
	if(r[t]!=-1){
		val[r[t]] = val[t];
	}
}
int merge(int le, int ri){
	if(le==-1 && ri==-1){
		return -1;
	}
	if(le==-1){
		return ri;
	}
	if(ri==-1){
		return le;
	}
	push(le);
	push(ri);
	if(pri[le]>pri[ri]){
		r[le] = merge(r[le],ri);
		pull(le);
		return le;
	}
	else{
		l[ri] = merge(le,l[ri]);
		pull(ri);
		return ri;
	}
}
pair<int, int> split(int t, int k){
	if(t==-1){
		return make_pair(-1,-1);
	}
	push(t);
	int lsum = 0;
	if(l[t]!=-1){
		lsum = sub[l[t]];
	}
	if(lsum>=k){
		pair<int, int> ret = split(l[t],k);
		l[t] = ret.second;
		ret.second = t;
		pull(t);
		return ret;
	}
	else{
		pair<int, int> ret = split(r[t],k-lsum-1);
		r[t] = ret.first;
		ret.first = t;
		pull(t);
		return ret;
	}
}
pair<int, int> dfs(int now, int from){
	int ret = 0;
	if(from==-1 && l[now]!=-1){
		ret += sub[l[now]];
	}
	if(from!=-1 && r[now]==from){
		ret++;
		if(l[now]!=-1){
			ret += sub[l[now]];
		}
	}
	if(p[now]==-1){
		return make_pair(now,ret);
	}
	pair<int, int> get = dfs(p[now],now);
	get.second += ret;
	return get;
}
int first(int now){
	if(l[now]==-1){
		return now;
	}
	return first(l[now]);
}
void dfs2(int now){
	cout << "NOW " << now << endl;
	if(l[now]!=-1){
		cout << "LEFT " << now << " -> " << l[now] << endl;
		dfs2(l[now]);
	}
	if(r[now]!=-1){
		cout << "RIGHT " << now << " -> " << r[now] << endl;
		dfs2(r[now]);
	}
}
vector<pair<int, int> > compress(vector<pair<int, int> > a){
	vector<int> all;
	for(int i = 0; i<a.size(); i++){
		all.push_back(a[i].first);
	}
	sort(all.begin(),all.end());
	int p =1;
	map<int, int> m;
	for(int i = 0; i<a.size(); i++){
		if(i==0 || all[i]!=all[i-1]){
			m[all[i]] = p++;
		}
	}
	for(int i = 0; i<a.size(); i++){
		a[i].first = m[a[i].first];
	}
	return a;
}
class Fenwick{
	public:
		vector<ll> li;
		int n;
		Fenwick(int a){
			n = a;
			li.resize(n+5);
		}
		void add(int ind, ll val){
			for(;ind<n; ind+=(ind&(-ind))){
				li[ind] += val;
			}
		}
		ll get(int ind){
			ll ret = 0LL;
			for(;ind>0; ind-=(ind&(-ind))){
				ret += li[ind];
			}
			return ret;
		}

};
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	srand(11);
	int n;
	cin >> n;
	for(int i = 0; i<n; i++){
		l[i] = -1;
		r[i] = -1;
		p[i] = -1;
		sub[i] = 1;
		pri[i] = rand();
		cin >> val[i];
		par[i] = -1;
	}
	for(int i = 0; i+1<n; i++){
		int a, b;
		cin >> a >> b;
		a--;
		b--;
		vector<pair<int, int> > li;
		//not including now
		int now = a;
		int set = val[b];
		pair<int, int> got = dfs(now,-1);
		int ind = got.second;
		int root = got.first;
		pair<int, int> both = split(root,ind+1);
		p[both.first] = -1;
		p[both.second] = -1;
		got = dfs(now,-1);
		ind = got.second;
		root = got.first;
		li.push_back(make_pair(val[got.first],1));
		while(true){
			got = dfs(now,-1);
			ind = got.second;
			root = got.first;
			int f = first(root);
			int all = val[root];
			if(par[f]==-1){
				//started from the bottom, now we here
				li.push_back(make_pair(all,ind));
				val[root] = set;
				now = f;
				break;
			}
			else{
				li.push_back(make_pair(all,ind));
				int nex = par[f];
				pair<int, int> got2 = dfs(nex,-1);
				int ind2 = got2.second;
				int root2 = got2.first;
				pair<int, int> both2 = split(root2,ind2+1);
				p[both2.first] = -1;
				p[both2.second] = -1;
				now = f;
				int nval = val[both2.first];
				val[merge(both2.first,root)] = nval;
			}
		}
		got = dfs(now,-1);
		root = got.first;
		par[b] = a;
		val[merge(root,b)] = set;
		li =compress(li);
		Fenwick fen = Fenwick(li.size());
		ll all = 0LL;
		ll ans = 0LL;
		for(int i = li.size()-1; i>=0; i--){
			ans += (all-fen.get(li[i].first))*(ll)li[i].second;
			fen.add(li[i].first,li[i].second);
			all += li[i].second;
		}
		assert(ans>=0LL);
		cout << ans << endl;
		// out << ans << endl;
	}
}

Compilation message

construction.cpp: In function 'std::vector<std::pair<int, int> > compress(std::vector<std::pair<int, int> >)':
construction.cpp:114:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i<a.size(); i++){
                 ~^~~~~~~~~
construction.cpp:120:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i<a.size(); i++){
                 ~^~~~~~~~~
construction.cpp:125:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i<a.size(); i++){
                 ~^~~~~~~~~

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	3 ms	484 KB	Output is correct
4	Correct	3 ms	484 KB	Output is correct
5	Correct	4 ms	636 KB	Output is correct
6	Correct	4 ms	636 KB	Output is correct
7	Correct	5 ms	636 KB	Output is correct
8	Correct	4 ms	636 KB	Output is correct
9	Correct	4 ms	636 KB	Output is correct
10	Correct	4 ms	636 KB	Output is correct
11	Correct	4 ms	636 KB	Output is correct
12	Correct	3 ms	636 KB	Output is correct
13	Correct	4 ms	636 KB	Output is correct
14	Correct	3 ms	636 KB	Output is correct
15	Correct	4 ms	664 KB	Output is correct
16	Correct	4 ms	664 KB	Output is correct
17	Correct	4 ms	664 KB	Output is correct
18	Correct	4 ms	664 KB	Output is correct
19	Correct	3 ms	664 KB	Output is correct
20	Correct	3 ms	744 KB	Output is correct
21	Correct	3 ms	744 KB	Output is correct
22	Correct	3 ms	744 KB	Output is correct
23	Correct	3 ms	744 KB	Output is correct
24	Correct	4 ms	744 KB	Output is correct
25	Correct	3 ms	744 KB	Output is correct
26	Correct	3 ms	744 KB	Output is correct
27	Correct	3 ms	744 KB	Output is correct
28	Correct	3 ms	744 KB	Output is correct
29	Correct	4 ms	744 KB	Output is correct
30	Correct	4 ms	744 KB	Output is correct
31	Correct	4 ms	744 KB	Output is correct
32	Correct	4 ms	744 KB	Output is correct
33	Correct	3 ms	744 KB	Output is correct
34	Correct	4 ms	744 KB	Output is correct
35	Correct	4 ms	744 KB	Output is correct
36	Correct	4 ms	744 KB	Output is correct
37	Correct	3 ms	744 KB	Output is correct
38	Correct	4 ms	744 KB	Output is correct
39	Correct	4 ms	744 KB	Output is correct
40	Correct	4 ms	744 KB	Output is correct
41	Correct	5 ms	744 KB	Output is correct
42	Correct	3 ms	744 KB	Output is correct
43	Correct	5 ms	744 KB	Output is correct
44	Correct	3 ms	744 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	3 ms	484 KB	Output is correct
4	Correct	3 ms	484 KB	Output is correct
5	Correct	4 ms	636 KB	Output is correct
6	Correct	4 ms	636 KB	Output is correct
7	Correct	5 ms	636 KB	Output is correct
8	Correct	4 ms	636 KB	Output is correct
9	Correct	4 ms	636 KB	Output is correct
10	Correct	4 ms	636 KB	Output is correct
11	Correct	4 ms	636 KB	Output is correct
12	Correct	3 ms	636 KB	Output is correct
13	Correct	4 ms	636 KB	Output is correct
14	Correct	3 ms	636 KB	Output is correct
15	Correct	4 ms	664 KB	Output is correct
16	Correct	4 ms	664 KB	Output is correct
17	Correct	4 ms	664 KB	Output is correct
18	Correct	4 ms	664 KB	Output is correct
19	Correct	3 ms	664 KB	Output is correct
20	Correct	3 ms	744 KB	Output is correct
21	Correct	3 ms	744 KB	Output is correct
22	Correct	3 ms	744 KB	Output is correct
23	Correct	3 ms	744 KB	Output is correct
24	Correct	4 ms	744 KB	Output is correct
25	Correct	3 ms	744 KB	Output is correct
26	Correct	3 ms	744 KB	Output is correct
27	Correct	3 ms	744 KB	Output is correct
28	Correct	3 ms	744 KB	Output is correct
29	Correct	4 ms	744 KB	Output is correct
30	Correct	4 ms	744 KB	Output is correct
31	Correct	4 ms	744 KB	Output is correct
32	Correct	4 ms	744 KB	Output is correct
33	Correct	3 ms	744 KB	Output is correct
34	Correct	4 ms	744 KB	Output is correct
35	Correct	4 ms	744 KB	Output is correct
36	Correct	4 ms	744 KB	Output is correct
37	Correct	3 ms	744 KB	Output is correct
38	Correct	4 ms	744 KB	Output is correct
39	Correct	4 ms	744 KB	Output is correct
40	Correct	4 ms	744 KB	Output is correct
41	Correct	5 ms	744 KB	Output is correct
42	Correct	3 ms	744 KB	Output is correct
43	Correct	5 ms	744 KB	Output is correct
44	Correct	3 ms	744 KB	Output is correct
45	Correct	11 ms	744 KB	Output is correct
46	Correct	29 ms	892 KB	Output is correct
47	Correct	25 ms	892 KB	Output is correct
48	Correct	19 ms	892 KB	Output is correct
49	Correct	13 ms	892 KB	Output is correct
50	Correct	13 ms	892 KB	Output is correct
51	Correct	14 ms	892 KB	Output is correct
52	Correct	15 ms	908 KB	Output is correct
53	Correct	16 ms	908 KB	Output is correct
54	Correct	14 ms	940 KB	Output is correct
55	Correct	21 ms	940 KB	Output is correct
56	Correct	22 ms	940 KB	Output is correct
57	Correct	34 ms	940 KB	Output is correct
58	Correct	26 ms	940 KB	Output is correct
59	Correct	24 ms	940 KB	Output is correct
60	Correct	26 ms	940 KB	Output is correct
61	Correct	16 ms	940 KB	Output is correct
62	Correct	16 ms	956 KB	Output is correct
63	Correct	16 ms	956 KB	Output is correct
64	Correct	18 ms	956 KB	Output is correct
65	Correct	18 ms	956 KB	Output is correct
66	Correct	18 ms	956 KB	Output is correct
67	Correct	21 ms	956 KB	Output is correct
68	Correct	13 ms	956 KB	Output is correct
69	Correct	21 ms	956 KB	Output is correct
70	Correct	16 ms	956 KB	Output is correct
71	Correct	16 ms	956 KB	Output is correct
72	Correct	24 ms	956 KB	Output is correct
73	Correct	23 ms	956 KB	Output is correct
74	Correct	16 ms	956 KB	Output is correct
75	Correct	15 ms	956 KB	Output is correct
76	Correct	14 ms	956 KB	Output is correct
77	Correct	15 ms	956 KB	Output is correct
78	Correct	14 ms	956 KB	Output is correct
79	Correct	15 ms	956 KB	Output is correct
80	Correct	15 ms	956 KB	Output is correct
81	Correct	15 ms	956 KB	Output is correct
82	Correct	15 ms	956 KB	Output is correct
83	Correct	15 ms	956 KB	Output is correct
84	Correct	14 ms	956 KB	Output is correct
85	Correct	17 ms	956 KB	Output is correct
86	Correct	16 ms	956 KB	Output is correct

Subtask #3
0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	376 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	3 ms	484 KB	Output is correct
4	Correct	3 ms	484 KB	Output is correct
5	Correct	4 ms	636 KB	Output is correct
6	Correct	4 ms	636 KB	Output is correct
7	Correct	5 ms	636 KB	Output is correct
8	Correct	4 ms	636 KB	Output is correct
9	Correct	4 ms	636 KB	Output is correct
10	Correct	4 ms	636 KB	Output is correct
11	Correct	4 ms	636 KB	Output is correct
12	Correct	3 ms	636 KB	Output is correct
13	Correct	4 ms	636 KB	Output is correct
14	Correct	3 ms	636 KB	Output is correct
15	Correct	4 ms	664 KB	Output is correct
16	Correct	4 ms	664 KB	Output is correct
17	Correct	4 ms	664 KB	Output is correct
18	Correct	4 ms	664 KB	Output is correct
19	Correct	3 ms	664 KB	Output is correct
20	Correct	3 ms	744 KB	Output is correct
21	Correct	3 ms	744 KB	Output is correct
22	Correct	3 ms	744 KB	Output is correct
23	Correct	3 ms	744 KB	Output is correct
24	Correct	4 ms	744 KB	Output is correct
25	Correct	3 ms	744 KB	Output is correct
26	Correct	3 ms	744 KB	Output is correct
27	Correct	3 ms	744 KB	Output is correct
28	Correct	3 ms	744 KB	Output is correct
29	Correct	4 ms	744 KB	Output is correct
30	Correct	4 ms	744 KB	Output is correct
31	Correct	4 ms	744 KB	Output is correct
32	Correct	4 ms	744 KB	Output is correct
33	Correct	3 ms	744 KB	Output is correct
34	Correct	4 ms	744 KB	Output is correct
35	Correct	4 ms	744 KB	Output is correct
36	Correct	4 ms	744 KB	Output is correct
37	Correct	3 ms	744 KB	Output is correct
38	Correct	4 ms	744 KB	Output is correct
39	Correct	4 ms	744 KB	Output is correct
40	Correct	4 ms	744 KB	Output is correct
41	Correct	5 ms	744 KB	Output is correct
42	Correct	3 ms	744 KB	Output is correct
43	Correct	5 ms	744 KB	Output is correct
44	Correct	3 ms	744 KB	Output is correct
45	Correct	11 ms	744 KB	Output is correct
46	Correct	29 ms	892 KB	Output is correct
47	Correct	25 ms	892 KB	Output is correct
48	Correct	19 ms	892 KB	Output is correct
49	Correct	13 ms	892 KB	Output is correct
50	Correct	13 ms	892 KB	Output is correct
51	Correct	14 ms	892 KB	Output is correct
52	Correct	15 ms	908 KB	Output is correct
53	Correct	16 ms	908 KB	Output is correct
54	Correct	14 ms	940 KB	Output is correct
55	Correct	21 ms	940 KB	Output is correct
56	Correct	22 ms	940 KB	Output is correct
57	Correct	34 ms	940 KB	Output is correct
58	Correct	26 ms	940 KB	Output is correct
59	Correct	24 ms	940 KB	Output is correct
60	Correct	26 ms	940 KB	Output is correct
61	Correct	16 ms	940 KB	Output is correct
62	Correct	16 ms	956 KB	Output is correct
63	Correct	16 ms	956 KB	Output is correct
64	Correct	18 ms	956 KB	Output is correct
65	Correct	18 ms	956 KB	Output is correct
66	Correct	18 ms	956 KB	Output is correct
67	Correct	21 ms	956 KB	Output is correct
68	Correct	13 ms	956 KB	Output is correct
69	Correct	21 ms	956 KB	Output is correct
70	Correct	16 ms	956 KB	Output is correct
71	Correct	16 ms	956 KB	Output is correct
72	Correct	24 ms	956 KB	Output is correct
73	Correct	23 ms	956 KB	Output is correct
74	Correct	16 ms	956 KB	Output is correct
75	Correct	15 ms	956 KB	Output is correct
76	Correct	14 ms	956 KB	Output is correct
77	Correct	15 ms	956 KB	Output is correct
78	Correct	14 ms	956 KB	Output is correct
79	Correct	15 ms	956 KB	Output is correct
80	Correct	15 ms	956 KB	Output is correct
81	Correct	15 ms	956 KB	Output is correct
82	Correct	15 ms	956 KB	Output is correct
83	Correct	15 ms	956 KB	Output is correct
84	Correct	14 ms	956 KB	Output is correct
85	Correct	17 ms	956 KB	Output is correct
86	Correct	16 ms	956 KB	Output is correct
87	Correct	46 ms	956 KB	Output is correct
88	Correct	143 ms	1612 KB	Output is correct
89	Correct	699 ms	3892 KB	Output is correct
90	Correct	780 ms	3988 KB	Output is correct
91	Incorrect	707 ms	3988 KB	Output isn't correct
92	Halted	0 ms	0 KB	-

답안 #49227

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
0 / 84.0