답안 #49235 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
49235	2018-05-24T00:46:03 Z	spencercompton	Construction of Highway (JOI18_construction)	C++17	16 / 100	1000 ms	7136 KB

construction

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int l[100001];
int r[100001];
int p[100001];
int sub[100001];
int pri[100001];
int val[100001];
int par[100001];
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;
	assert(n<=100000);
	for(int i = 0; i<n; i++){
		assert(i<100000);
		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--;
		assert(a<100000 && b<100000);
		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 << "\n";
	}
}

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	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	560 KB	Output is correct
4	Correct	2 ms	560 KB	Output is correct
5	Correct	3 ms	560 KB	Output is correct
6	Correct	3 ms	668 KB	Output is correct
7	Correct	3 ms	668 KB	Output is correct
8	Correct	3 ms	668 KB	Output is correct
9	Correct	3 ms	668 KB	Output is correct
10	Correct	3 ms	668 KB	Output is correct
11	Correct	3 ms	668 KB	Output is correct
12	Correct	3 ms	668 KB	Output is correct
13	Correct	3 ms	668 KB	Output is correct
14	Correct	3 ms	668 KB	Output is correct
15	Correct	5 ms	668 KB	Output is correct
16	Correct	3 ms	668 KB	Output is correct
17	Correct	3 ms	668 KB	Output is correct
18	Correct	4 ms	668 KB	Output is correct
19	Correct	3 ms	668 KB	Output is correct
20	Correct	4 ms	668 KB	Output is correct
21	Correct	3 ms	668 KB	Output is correct
22	Correct	7 ms	668 KB	Output is correct
23	Correct	3 ms	668 KB	Output is correct
24	Correct	3 ms	668 KB	Output is correct
25	Correct	3 ms	668 KB	Output is correct
26	Correct	3 ms	668 KB	Output is correct
27	Correct	3 ms	668 KB	Output is correct
28	Correct	3 ms	668 KB	Output is correct
29	Correct	3 ms	668 KB	Output is correct
30	Correct	4 ms	668 KB	Output is correct
31	Correct	4 ms	668 KB	Output is correct
32	Correct	4 ms	668 KB	Output is correct
33	Correct	5 ms	668 KB	Output is correct
34	Correct	3 ms	668 KB	Output is correct
35	Correct	3 ms	700 KB	Output is correct
36	Correct	3 ms	700 KB	Output is correct
37	Correct	3 ms	700 KB	Output is correct
38	Correct	3 ms	700 KB	Output is correct
39	Correct	3 ms	700 KB	Output is correct
40	Correct	3 ms	700 KB	Output is correct
41	Correct	3 ms	700 KB	Output is correct
42	Correct	3 ms	700 KB	Output is correct
43	Correct	3 ms	700 KB	Output is correct
44	Correct	7 ms	700 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	560 KB	Output is correct
4	Correct	2 ms	560 KB	Output is correct
5	Correct	3 ms	560 KB	Output is correct
6	Correct	3 ms	668 KB	Output is correct
7	Correct	3 ms	668 KB	Output is correct
8	Correct	3 ms	668 KB	Output is correct
9	Correct	3 ms	668 KB	Output is correct
10	Correct	3 ms	668 KB	Output is correct
11	Correct	3 ms	668 KB	Output is correct
12	Correct	3 ms	668 KB	Output is correct
13	Correct	3 ms	668 KB	Output is correct
14	Correct	3 ms	668 KB	Output is correct
15	Correct	5 ms	668 KB	Output is correct
16	Correct	3 ms	668 KB	Output is correct
17	Correct	3 ms	668 KB	Output is correct
18	Correct	4 ms	668 KB	Output is correct
19	Correct	3 ms	668 KB	Output is correct
20	Correct	4 ms	668 KB	Output is correct
21	Correct	3 ms	668 KB	Output is correct
22	Correct	7 ms	668 KB	Output is correct
23	Correct	3 ms	668 KB	Output is correct
24	Correct	3 ms	668 KB	Output is correct
25	Correct	3 ms	668 KB	Output is correct
26	Correct	3 ms	668 KB	Output is correct
27	Correct	3 ms	668 KB	Output is correct
28	Correct	3 ms	668 KB	Output is correct
29	Correct	3 ms	668 KB	Output is correct
30	Correct	4 ms	668 KB	Output is correct
31	Correct	4 ms	668 KB	Output is correct
32	Correct	4 ms	668 KB	Output is correct
33	Correct	5 ms	668 KB	Output is correct
34	Correct	3 ms	668 KB	Output is correct
35	Correct	3 ms	700 KB	Output is correct
36	Correct	3 ms	700 KB	Output is correct
37	Correct	3 ms	700 KB	Output is correct
38	Correct	3 ms	700 KB	Output is correct
39	Correct	3 ms	700 KB	Output is correct
40	Correct	3 ms	700 KB	Output is correct
41	Correct	3 ms	700 KB	Output is correct
42	Correct	3 ms	700 KB	Output is correct
43	Correct	3 ms	700 KB	Output is correct
44	Correct	7 ms	700 KB	Output is correct
45	Correct	4 ms	700 KB	Output is correct
46	Correct	13 ms	764 KB	Output is correct
47	Correct	16 ms	764 KB	Output is correct
48	Correct	12 ms	780 KB	Output is correct
49	Correct	9 ms	780 KB	Output is correct
50	Correct	11 ms	796 KB	Output is correct
51	Correct	8 ms	796 KB	Output is correct
52	Correct	9 ms	1016 KB	Output is correct
53	Correct	10 ms	1016 KB	Output is correct
54	Correct	9 ms	1016 KB	Output is correct
55	Correct	10 ms	1016 KB	Output is correct
56	Correct	8 ms	1016 KB	Output is correct
57	Correct	16 ms	1016 KB	Output is correct
58	Correct	19 ms	1016 KB	Output is correct
59	Correct	29 ms	1016 KB	Output is correct
60	Correct	16 ms	1016 KB	Output is correct
61	Correct	16 ms	1016 KB	Output is correct
62	Correct	10 ms	1016 KB	Output is correct
63	Correct	11 ms	1016 KB	Output is correct
64	Correct	10 ms	1016 KB	Output is correct
65	Correct	14 ms	1016 KB	Output is correct
66	Correct	13 ms	1016 KB	Output is correct
67	Correct	14 ms	1016 KB	Output is correct
68	Correct	8 ms	1016 KB	Output is correct
69	Correct	8 ms	1016 KB	Output is correct
70	Correct	9 ms	1016 KB	Output is correct
71	Correct	9 ms	1016 KB	Output is correct
72	Correct	16 ms	1016 KB	Output is correct
73	Correct	19 ms	1016 KB	Output is correct
74	Correct	10 ms	1016 KB	Output is correct
75	Correct	25 ms	1016 KB	Output is correct
76	Correct	23 ms	1016 KB	Output is correct
77	Correct	7 ms	1016 KB	Output is correct
78	Correct	7 ms	1016 KB	Output is correct
79	Correct	8 ms	1016 KB	Output is correct
80	Correct	8 ms	1016 KB	Output is correct
81	Correct	11 ms	1016 KB	Output is correct
82	Correct	15 ms	1016 KB	Output is correct
83	Correct	10 ms	1016 KB	Output is correct
84	Correct	9 ms	1016 KB	Output is correct
85	Correct	9 ms	1016 KB	Output is correct
86	Correct	10 ms	1016 KB	Output is correct

Subtask #3
0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	560 KB	Output is correct
4	Correct	2 ms	560 KB	Output is correct
5	Correct	3 ms	560 KB	Output is correct
6	Correct	3 ms	668 KB	Output is correct
7	Correct	3 ms	668 KB	Output is correct
8	Correct	3 ms	668 KB	Output is correct
9	Correct	3 ms	668 KB	Output is correct
10	Correct	3 ms	668 KB	Output is correct
11	Correct	3 ms	668 KB	Output is correct
12	Correct	3 ms	668 KB	Output is correct
13	Correct	3 ms	668 KB	Output is correct
14	Correct	3 ms	668 KB	Output is correct
15	Correct	5 ms	668 KB	Output is correct
16	Correct	3 ms	668 KB	Output is correct
17	Correct	3 ms	668 KB	Output is correct
18	Correct	4 ms	668 KB	Output is correct
19	Correct	3 ms	668 KB	Output is correct
20	Correct	4 ms	668 KB	Output is correct
21	Correct	3 ms	668 KB	Output is correct
22	Correct	7 ms	668 KB	Output is correct
23	Correct	3 ms	668 KB	Output is correct
24	Correct	3 ms	668 KB	Output is correct
25	Correct	3 ms	668 KB	Output is correct
26	Correct	3 ms	668 KB	Output is correct
27	Correct	3 ms	668 KB	Output is correct
28	Correct	3 ms	668 KB	Output is correct
29	Correct	3 ms	668 KB	Output is correct
30	Correct	4 ms	668 KB	Output is correct
31	Correct	4 ms	668 KB	Output is correct
32	Correct	4 ms	668 KB	Output is correct
33	Correct	5 ms	668 KB	Output is correct
34	Correct	3 ms	668 KB	Output is correct
35	Correct	3 ms	700 KB	Output is correct
36	Correct	3 ms	700 KB	Output is correct
37	Correct	3 ms	700 KB	Output is correct
38	Correct	3 ms	700 KB	Output is correct
39	Correct	3 ms	700 KB	Output is correct
40	Correct	3 ms	700 KB	Output is correct
41	Correct	3 ms	700 KB	Output is correct
42	Correct	3 ms	700 KB	Output is correct
43	Correct	3 ms	700 KB	Output is correct
44	Correct	7 ms	700 KB	Output is correct
45	Correct	4 ms	700 KB	Output is correct
46	Correct	13 ms	764 KB	Output is correct
47	Correct	16 ms	764 KB	Output is correct
48	Correct	12 ms	780 KB	Output is correct
49	Correct	9 ms	780 KB	Output is correct
50	Correct	11 ms	796 KB	Output is correct
51	Correct	8 ms	796 KB	Output is correct
52	Correct	9 ms	1016 KB	Output is correct
53	Correct	10 ms	1016 KB	Output is correct
54	Correct	9 ms	1016 KB	Output is correct
55	Correct	10 ms	1016 KB	Output is correct
56	Correct	8 ms	1016 KB	Output is correct
57	Correct	16 ms	1016 KB	Output is correct
58	Correct	19 ms	1016 KB	Output is correct
59	Correct	29 ms	1016 KB	Output is correct
60	Correct	16 ms	1016 KB	Output is correct
61	Correct	16 ms	1016 KB	Output is correct
62	Correct	10 ms	1016 KB	Output is correct
63	Correct	11 ms	1016 KB	Output is correct
64	Correct	10 ms	1016 KB	Output is correct
65	Correct	14 ms	1016 KB	Output is correct
66	Correct	13 ms	1016 KB	Output is correct
67	Correct	14 ms	1016 KB	Output is correct
68	Correct	8 ms	1016 KB	Output is correct
69	Correct	8 ms	1016 KB	Output is correct
70	Correct	9 ms	1016 KB	Output is correct
71	Correct	9 ms	1016 KB	Output is correct
72	Correct	16 ms	1016 KB	Output is correct
73	Correct	19 ms	1016 KB	Output is correct
74	Correct	10 ms	1016 KB	Output is correct
75	Correct	25 ms	1016 KB	Output is correct
76	Correct	23 ms	1016 KB	Output is correct
77	Correct	7 ms	1016 KB	Output is correct
78	Correct	7 ms	1016 KB	Output is correct
79	Correct	8 ms	1016 KB	Output is correct
80	Correct	8 ms	1016 KB	Output is correct
81	Correct	11 ms	1016 KB	Output is correct
82	Correct	15 ms	1016 KB	Output is correct
83	Correct	10 ms	1016 KB	Output is correct
84	Correct	9 ms	1016 KB	Output is correct
85	Correct	9 ms	1016 KB	Output is correct
86	Correct	10 ms	1016 KB	Output is correct
87	Correct	49 ms	1036 KB	Output is correct
88	Correct	108 ms	1620 KB	Output is correct
89	Correct	425 ms	3812 KB	Output is correct
90	Correct	450 ms	3812 KB	Output is correct
91	Correct	367 ms	3932 KB	Output is correct
92	Correct	162 ms	3932 KB	Output is correct
93	Correct	179 ms	3932 KB	Output is correct
94	Correct	166 ms	3932 KB	Output is correct
95	Correct	253 ms	6964 KB	Output is correct
96	Correct	302 ms	7136 KB	Output is correct
97	Correct	258 ms	7136 KB	Output is correct
98	Correct	267 ms	7136 KB	Output is correct
99	Correct	214 ms	7136 KB	Output is correct
100	Execution timed out	1085 ms	7136 KB	Time limit exceeded
101	Halted	0 ms	0 KB	-

답안 #49235

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