답안 #362931

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
362931	2021-02-04T18:23:50 Z	dolphingarlic	Construction of Highway (JOI18_construction)	C++14	100 / 100	646 ms	106604 KB

construction

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

int c[100001], u[100001], v[100001], par[100001];
vector<int> graph[100001];
int heavy[100001], head[100001], depth[100001];
deque<pair<int, int>> hld_vals[100001];

int dfs(int node = 1) {
	int sz = 1, mx = 0;
	for (int i : graph[node]) {
		int csz = dfs(i);
		sz += csz;
		if (csz > mx) mx = csz, heavy[node] = i;
	}
	return sz;
}

void decompose(int node = 1, int h = 1, int d = 1) {
	head[node] = h; depth[node] = d;
	if (heavy[node]) decompose(heavy[node], h, d + 1);
	for (int i : graph[node]) if (i != heavy[node]) decompose(i, i, 1);
}

ll count_inversions(deque<pair<int, int>> &path) {
	map<int, int> comp;
	for (pair<int, int> i : path) comp[i.first];
	int n = 0;
	for (auto &i : comp) i.second = ++n;

	ll ans = 0;
	vector<ll> bit(n + 1);
	for (pair<int, int> i : path) {
		for (int j = comp[i.first] - 1; j; j -= j & -j) ans += bit[j] * i.second;
		for (int j = comp[i.first]; j <= n; j += j & -j) bit[j] += i.second;
	}
	return ans;
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> c[i];
	for (int i = 1; i < n; i++) {
		cin >> u[i] >> v[i];
		graph[u[i]].push_back(v[i]);
		par[v[i]] = u[i];
	}
	dfs(); decompose();

	hld_vals[1].push_back({c[1], 1});
	for (int i = 1; i < n; i++) {
		deque<pair<int, int>> path;
		int curr = v[i];
		while (curr) {
			deque<pair<int, int>> ins;
			int rem = depth[curr] - (curr == v[i]), h = head[curr];
			while (rem) {
				if (hld_vals[h][0].second <= rem) {
					rem -= hld_vals[h][0].second;
					ins.push_front(hld_vals[h][0]);
					hld_vals[h].pop_front();
				} else {
					ins.push_front({hld_vals[h][0].first, rem});
					pair<int, int> upd = {hld_vals[h][0].first, hld_vals[h][0].second - rem};
					hld_vals[h].pop_front();
					hld_vals[h].push_front(upd);
					rem = 0;
				}
			}
			hld_vals[h].push_front({c[v[i]], depth[curr]});
			path.insert(path.end(), ins.begin(), ins.end());
			curr = par[h];
		}
		cout << count_inversions(path) << '\n';
	}
	return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	70124 KB	Output is correct
2	Correct	55 ms	69996 KB	Output is correct
3	Correct	55 ms	70124 KB	Output is correct
4	Correct	54 ms	70124 KB	Output is correct
5	Correct	60 ms	70252 KB	Output is correct
6	Correct	54 ms	70252 KB	Output is correct
7	Correct	59 ms	70252 KB	Output is correct
8	Correct	54 ms	70124 KB	Output is correct
9	Correct	52 ms	70124 KB	Output is correct
10	Correct	62 ms	70124 KB	Output is correct
11	Correct	53 ms	70252 KB	Output is correct
12	Correct	54 ms	70252 KB	Output is correct
13	Correct	53 ms	70252 KB	Output is correct
14	Correct	57 ms	70252 KB	Output is correct
15	Correct	56 ms	70124 KB	Output is correct
16	Correct	54 ms	70124 KB	Output is correct
17	Correct	55 ms	70124 KB	Output is correct
18	Correct	57 ms	70124 KB	Output is correct
19	Correct	67 ms	70252 KB	Output is correct
20	Correct	58 ms	70252 KB	Output is correct
21	Correct	57 ms	70252 KB	Output is correct
22	Correct	61 ms	70252 KB	Output is correct
23	Correct	62 ms	70252 KB	Output is correct
24	Correct	54 ms	70124 KB	Output is correct
25	Correct	54 ms	70124 KB	Output is correct
26	Correct	54 ms	70124 KB	Output is correct
27	Correct	54 ms	70252 KB	Output is correct
28	Correct	54 ms	70252 KB	Output is correct
29	Correct	58 ms	70252 KB	Output is correct
30	Correct	55 ms	70124 KB	Output is correct
31	Correct	54 ms	70124 KB	Output is correct
32	Correct	58 ms	70252 KB	Output is correct
33	Correct	54 ms	70140 KB	Output is correct
34	Correct	61 ms	70124 KB	Output is correct
35	Correct	60 ms	70252 KB	Output is correct
36	Correct	53 ms	70252 KB	Output is correct
37	Correct	60 ms	70124 KB	Output is correct
38	Correct	60 ms	70400 KB	Output is correct
39	Correct	55 ms	70252 KB	Output is correct
40	Correct	65 ms	70184 KB	Output is correct
41	Correct	55 ms	70124 KB	Output is correct
42	Correct	58 ms	70252 KB	Output is correct
43	Correct	54 ms	70264 KB	Output is correct
44	Correct	61 ms	70332 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	70124 KB	Output is correct
2	Correct	55 ms	69996 KB	Output is correct
3	Correct	55 ms	70124 KB	Output is correct
4	Correct	54 ms	70124 KB	Output is correct
5	Correct	60 ms	70252 KB	Output is correct
6	Correct	54 ms	70252 KB	Output is correct
7	Correct	59 ms	70252 KB	Output is correct
8	Correct	54 ms	70124 KB	Output is correct
9	Correct	52 ms	70124 KB	Output is correct
10	Correct	62 ms	70124 KB	Output is correct
11	Correct	53 ms	70252 KB	Output is correct
12	Correct	54 ms	70252 KB	Output is correct
13	Correct	53 ms	70252 KB	Output is correct
14	Correct	57 ms	70252 KB	Output is correct
15	Correct	56 ms	70124 KB	Output is correct
16	Correct	54 ms	70124 KB	Output is correct
17	Correct	55 ms	70124 KB	Output is correct
18	Correct	57 ms	70124 KB	Output is correct
19	Correct	67 ms	70252 KB	Output is correct
20	Correct	58 ms	70252 KB	Output is correct
21	Correct	57 ms	70252 KB	Output is correct
22	Correct	61 ms	70252 KB	Output is correct
23	Correct	62 ms	70252 KB	Output is correct
24	Correct	54 ms	70124 KB	Output is correct
25	Correct	54 ms	70124 KB	Output is correct
26	Correct	54 ms	70124 KB	Output is correct
27	Correct	54 ms	70252 KB	Output is correct
28	Correct	54 ms	70252 KB	Output is correct
29	Correct	58 ms	70252 KB	Output is correct
30	Correct	55 ms	70124 KB	Output is correct
31	Correct	54 ms	70124 KB	Output is correct
32	Correct	58 ms	70252 KB	Output is correct
33	Correct	54 ms	70140 KB	Output is correct
34	Correct	61 ms	70124 KB	Output is correct
35	Correct	60 ms	70252 KB	Output is correct
36	Correct	53 ms	70252 KB	Output is correct
37	Correct	60 ms	70124 KB	Output is correct
38	Correct	60 ms	70400 KB	Output is correct
39	Correct	55 ms	70252 KB	Output is correct
40	Correct	65 ms	70184 KB	Output is correct
41	Correct	55 ms	70124 KB	Output is correct
42	Correct	58 ms	70252 KB	Output is correct
43	Correct	54 ms	70264 KB	Output is correct
44	Correct	61 ms	70332 KB	Output is correct
45	Correct	58 ms	70380 KB	Output is correct
46	Correct	65 ms	71276 KB	Output is correct
47	Correct	75 ms	71276 KB	Output is correct
48	Correct	65 ms	71276 KB	Output is correct
49	Correct	56 ms	70508 KB	Output is correct
50	Correct	56 ms	70508 KB	Output is correct
51	Correct	56 ms	70508 KB	Output is correct
52	Correct	58 ms	71532 KB	Output is correct
53	Correct	60 ms	71532 KB	Output is correct
54	Correct	59 ms	71532 KB	Output is correct
55	Correct	59 ms	71532 KB	Output is correct
56	Correct	62 ms	71404 KB	Output is correct
57	Correct	67 ms	71276 KB	Output is correct
58	Correct	71 ms	71276 KB	Output is correct
59	Correct	69 ms	71276 KB	Output is correct
60	Correct	73 ms	71276 KB	Output is correct
61	Correct	62 ms	71404 KB	Output is correct
62	Correct	62 ms	71404 KB	Output is correct
63	Correct	64 ms	71404 KB	Output is correct
64	Correct	65 ms	71404 KB	Output is correct
65	Correct	67 ms	71276 KB	Output is correct
66	Correct	65 ms	71276 KB	Output is correct
67	Correct	64 ms	71276 KB	Output is correct
68	Correct	57 ms	70508 KB	Output is correct
69	Correct	59 ms	71532 KB	Output is correct
70	Correct	63 ms	71660 KB	Output is correct
71	Correct	62 ms	71404 KB	Output is correct
72	Correct	67 ms	71276 KB	Output is correct
73	Correct	70 ms	71276 KB	Output is correct
74	Correct	63 ms	71404 KB	Output is correct
75	Correct	63 ms	71276 KB	Output is correct
76	Correct	63 ms	71276 KB	Output is correct
77	Correct	63 ms	71276 KB	Output is correct
78	Correct	63 ms	71276 KB	Output is correct
79	Correct	66 ms	71428 KB	Output is correct
80	Correct	62 ms	71276 KB	Output is correct
81	Correct	63 ms	71276 KB	Output is correct
82	Correct	63 ms	71276 KB	Output is correct
83	Correct	64 ms	71276 KB	Output is correct
84	Correct	62 ms	71404 KB	Output is correct
85	Correct	62 ms	71276 KB	Output is correct
86	Correct	63 ms	71276 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	70124 KB	Output is correct
2	Correct	55 ms	69996 KB	Output is correct
3	Correct	55 ms	70124 KB	Output is correct
4	Correct	54 ms	70124 KB	Output is correct
5	Correct	60 ms	70252 KB	Output is correct
6	Correct	54 ms	70252 KB	Output is correct
7	Correct	59 ms	70252 KB	Output is correct
8	Correct	54 ms	70124 KB	Output is correct
9	Correct	52 ms	70124 KB	Output is correct
10	Correct	62 ms	70124 KB	Output is correct
11	Correct	53 ms	70252 KB	Output is correct
12	Correct	54 ms	70252 KB	Output is correct
13	Correct	53 ms	70252 KB	Output is correct
14	Correct	57 ms	70252 KB	Output is correct
15	Correct	56 ms	70124 KB	Output is correct
16	Correct	54 ms	70124 KB	Output is correct
17	Correct	55 ms	70124 KB	Output is correct
18	Correct	57 ms	70124 KB	Output is correct
19	Correct	67 ms	70252 KB	Output is correct
20	Correct	58 ms	70252 KB	Output is correct
21	Correct	57 ms	70252 KB	Output is correct
22	Correct	61 ms	70252 KB	Output is correct
23	Correct	62 ms	70252 KB	Output is correct
24	Correct	54 ms	70124 KB	Output is correct
25	Correct	54 ms	70124 KB	Output is correct
26	Correct	54 ms	70124 KB	Output is correct
27	Correct	54 ms	70252 KB	Output is correct
28	Correct	54 ms	70252 KB	Output is correct
29	Correct	58 ms	70252 KB	Output is correct
30	Correct	55 ms	70124 KB	Output is correct
31	Correct	54 ms	70124 KB	Output is correct
32	Correct	58 ms	70252 KB	Output is correct
33	Correct	54 ms	70140 KB	Output is correct
34	Correct	61 ms	70124 KB	Output is correct
35	Correct	60 ms	70252 KB	Output is correct
36	Correct	53 ms	70252 KB	Output is correct
37	Correct	60 ms	70124 KB	Output is correct
38	Correct	60 ms	70400 KB	Output is correct
39	Correct	55 ms	70252 KB	Output is correct
40	Correct	65 ms	70184 KB	Output is correct
41	Correct	55 ms	70124 KB	Output is correct
42	Correct	58 ms	70252 KB	Output is correct
43	Correct	54 ms	70264 KB	Output is correct
44	Correct	61 ms	70332 KB	Output is correct
45	Correct	58 ms	70380 KB	Output is correct
46	Correct	65 ms	71276 KB	Output is correct
47	Correct	75 ms	71276 KB	Output is correct
48	Correct	65 ms	71276 KB	Output is correct
49	Correct	56 ms	70508 KB	Output is correct
50	Correct	56 ms	70508 KB	Output is correct
51	Correct	56 ms	70508 KB	Output is correct
52	Correct	58 ms	71532 KB	Output is correct
53	Correct	60 ms	71532 KB	Output is correct
54	Correct	59 ms	71532 KB	Output is correct
55	Correct	59 ms	71532 KB	Output is correct
56	Correct	62 ms	71404 KB	Output is correct
57	Correct	67 ms	71276 KB	Output is correct
58	Correct	71 ms	71276 KB	Output is correct
59	Correct	69 ms	71276 KB	Output is correct
60	Correct	73 ms	71276 KB	Output is correct
61	Correct	62 ms	71404 KB	Output is correct
62	Correct	62 ms	71404 KB	Output is correct
63	Correct	64 ms	71404 KB	Output is correct
64	Correct	65 ms	71404 KB	Output is correct
65	Correct	67 ms	71276 KB	Output is correct
66	Correct	65 ms	71276 KB	Output is correct
67	Correct	64 ms	71276 KB	Output is correct
68	Correct	57 ms	70508 KB	Output is correct
69	Correct	59 ms	71532 KB	Output is correct
70	Correct	63 ms	71660 KB	Output is correct
71	Correct	62 ms	71404 KB	Output is correct
72	Correct	67 ms	71276 KB	Output is correct
73	Correct	70 ms	71276 KB	Output is correct
74	Correct	63 ms	71404 KB	Output is correct
75	Correct	63 ms	71276 KB	Output is correct
76	Correct	63 ms	71276 KB	Output is correct
77	Correct	63 ms	71276 KB	Output is correct
78	Correct	63 ms	71276 KB	Output is correct
79	Correct	66 ms	71428 KB	Output is correct
80	Correct	62 ms	71276 KB	Output is correct
81	Correct	63 ms	71276 KB	Output is correct
82	Correct	63 ms	71276 KB	Output is correct
83	Correct	64 ms	71276 KB	Output is correct
84	Correct	62 ms	71404 KB	Output is correct
85	Correct	62 ms	71276 KB	Output is correct
86	Correct	63 ms	71276 KB	Output is correct
87	Correct	79 ms	73196 KB	Output is correct
88	Correct	133 ms	79212 KB	Output is correct
89	Correct	387 ms	100588 KB	Output is correct
90	Correct	377 ms	100588 KB	Output is correct
91	Correct	387 ms	100716 KB	Output is correct
92	Correct	147 ms	82432 KB	Output is correct
93	Correct	155 ms	82284 KB	Output is correct
94	Correct	181 ms	82412 KB	Output is correct
95	Correct	206 ms	106604 KB	Output is correct
96	Correct	250 ms	106604 KB	Output is correct
97	Correct	247 ms	106604 KB	Output is correct
98	Correct	247 ms	106604 KB	Output is correct
99	Correct	200 ms	103660 KB	Output is correct
100	Correct	478 ms	93188 KB	Output is correct
101	Correct	640 ms	92972 KB	Output is correct
102	Correct	629 ms	92908 KB	Output is correct
103	Correct	646 ms	93292 KB	Output is correct
104	Correct	207 ms	103660 KB	Output is correct
105	Correct	203 ms	103660 KB	Output is correct
106	Correct	228 ms	103660 KB	Output is correct
107	Correct	318 ms	100588 KB	Output is correct
108	Correct	370 ms	100716 KB	Output is correct
109	Correct	408 ms	100588 KB	Output is correct
110	Correct	146 ms	82412 KB	Output is correct
111	Correct	215 ms	106604 KB	Output is correct
112	Correct	208 ms	104300 KB	Output is correct
113	Correct	204 ms	103788 KB	Output is correct
114	Correct	495 ms	93036 KB	Output is correct
115	Correct	635 ms	93152 KB	Output is correct
116	Correct	218 ms	103748 KB	Output is correct
117	Correct	200 ms	101996 KB	Output is correct
118	Correct	205 ms	101484 KB	Output is correct
119	Correct	217 ms	101228 KB	Output is correct
120	Correct	206 ms	101868 KB	Output is correct
121	Correct	208 ms	101484 KB	Output is correct
122	Correct	217 ms	101356 KB	Output is correct
123	Correct	256 ms	102124 KB	Output is correct
124	Correct	226 ms	101524 KB	Output is correct
125	Correct	220 ms	101228 KB	Output is correct
126	Correct	226 ms	102124 KB	Output is correct
127	Correct	270 ms	101740 KB	Output is correct
128	Correct	219 ms	101228 KB	Output is correct

답안 #362931

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 84.0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
84.0 / 84.0