답안 #305619

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
305619	2020-09-23T17:25:19 Z	youngyojun	Construction of Highway (JOI18_construction)	C++17	100 / 100	696 ms	26616 KB

construction

#include <bits/stdc++.h>
#define pb push_back
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define befv(V) ((V)[(sz(V)-2)])
#define sorv(V) sort(allv(V))
#define revv(V) reverse(allv(V))
#define univ(V) (V).erase(unique(allv(V)),(V).end())
#define clv(V) (V).clear()
#define upmin(a,b) (a)=min((a),(b))
#define upmax(a,b) (a)=max((a),(b))
#define rb(x) ((x)&(-(x)))
#define INF (0x3f3f3f3f)
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
 
const int MAXN = 100055;
 
struct BIT {
	int d[MAXN];
	void upd(int x, int r) {
		for(x += 2; x < MAXN; x += rb(x))
			d[x] += r;
	}
	int get(int x) {
		int r = 0; for(x += 2; x; x -= rb(x))
			r += d[x];
		return r;
	}
} bit;
 
struct HLD {
	set<pii> V;
	int rprt, n;
 
	void init(int _n) {
		n = _n;
	}
 
	void get(vector<pii> &PQ, int i) {
		vector<pii> T;
 
		for(auto it = V.lower_bound(pii(i, -INF));; it--) {
			T.eb(min(i, it -> first), it -> second);
			if(V.begin() == it) break;
		}
		T.eb(-1, -1);
 
		for(int i = 1, n = sz(T), l, x; i < n; i++) {
			l = T[i-1].first - T[i].first;
			x = T[i-1].second;
			if(!l) continue;
 
			if(PQ.empty() || PQ.back().first != x) PQ.eb(x, l);
			else PQ.back().second += l;
		}
	}
	void upd(int i, int c) {
		for(; !V.empty();) {
			auto it = V.begin();
			if(i < it -> first) break;
			V.erase(it);
		}
		V.insert(pii(i, c));
	}
} hld[MAXN];
 
vector<int> G[MAXN];
 
int HI[MAXN], HJ[MAXN], HSZ[MAXN], Hn;
 
int prt[MAXN], dep[MAXN], cnt[MAXN], depo[MAXN];
 
int A[MAXN], B[MAXN], C[MAXN];
 
int N;
 
void f(vector<pii> &V, int i) {
	for(; i; i = hld[HI[i]].rprt)
		hld[HI[i]].get(V, HJ[i]);
}
void g(int i, int c) {
	for(; i; i = hld[HI[i]].rprt)
		hld[HI[i]].upd(HJ[i], c);
}
 
ll getRev(vector<pii> &V) {
	{
		vector<int> VX;
		for(auto &v : V) VX.pb(v.first);
		sorv(VX); univ(VX);
		for(auto &v : V)
			v.first = (int)(lower_bound(allv(VX), v.first) - VX.begin()) + 1;
	}
 
	ll ret = 0;
	for(auto &v : V) {
		ret += ll(bit.get(v.first-1)) * v.second;
		bit.upd(v.first, v.second);
	}
	for(auto &v : V) bit.upd(v.first, -v.second);
	return ret;
}
 
void dfs1(int i) {
	cnt[i] = 1;
	for(int v : G[i]) {
		dep[v] = dep[i] + 1;
		prt[v] = i;
		dfs1(v);
		cnt[i] += cnt[v];
	}
}
void dfs2(int i) {
	HJ[i] = HSZ[HI[i]]++;
	int hi = -1, hc = -1;
	for(int v : G[i]) {
		if(cnt[v] <= hc) continue;
		hi = v; hc = cnt[v];
	}
	if(hi < 0) return;
	HI[hi] = HI[i];
	dfs2(hi);
}
 
int main() {
	ios::sync_with_stdio(false);
 
	cin >> N;
	for(int i = 1; i <= N; i++) cin >> C[i];
	for(int i = 1; i < N; i++) cin >> A[i] >> B[i];
 
	for(int i = 1; i < N; i++) G[A[i]].pb(B[i]);
	dep[1] = 1; dfs1(1);
 
	iota(depo, depo+N+1, 0);
	sort(depo+1, depo+N+1, [&](int a, int b) { return dep[a] < dep[b]; });
	for(int oi = 1, i; oi <= N; oi++) {
		i = depo[oi];
		if(HI[i]) continue;
		Hn++; HI[i] = Hn;
		dfs2(i);
	}
 
	for(int i = 1; i <= Hn; i++) hld[i].init(HSZ[i]);
	for(int i = 1; i <= N; i++) {
		hld[HI[i]].V.insert(pii(HJ[i], C[i]));
		if(!HJ[i]) hld[HI[i]].rprt = prt[i];
	}
 
	for(int qi = 1, a, b; qi < N; qi++) {
		a = A[qi]; b = B[qi];
 
		vector<pii> V; f(V, a);
		printf("%lld\n", getRev(V));
		g(b, C[b]);
	}
	return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	8192 KB	Output is correct
2	Correct	6 ms	8192 KB	Output is correct
3	Correct	6 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	7 ms	8320 KB	Output is correct
6	Correct	7 ms	8320 KB	Output is correct
7	Correct	8 ms	8320 KB	Output is correct
8	Correct	7 ms	8320 KB	Output is correct
9	Correct	7 ms	8320 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	7 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	7 ms	8320 KB	Output is correct
16	Correct	8 ms	8320 KB	Output is correct
17	Correct	7 ms	8320 KB	Output is correct
18	Correct	8 ms	8320 KB	Output is correct
19	Correct	7 ms	8320 KB	Output is correct
20	Correct	7 ms	8320 KB	Output is correct
21	Correct	7 ms	8320 KB	Output is correct
22	Correct	7 ms	8448 KB	Output is correct
23	Correct	7 ms	8320 KB	Output is correct
24	Correct	7 ms	8320 KB	Output is correct
25	Correct	8 ms	8320 KB	Output is correct
26	Correct	7 ms	8320 KB	Output is correct
27	Correct	7 ms	8320 KB	Output is correct
28	Correct	7 ms	8320 KB	Output is correct
29	Correct	6 ms	8320 KB	Output is correct
30	Correct	8 ms	8320 KB	Output is correct
31	Correct	7 ms	8320 KB	Output is correct
32	Correct	7 ms	8320 KB	Output is correct
33	Correct	7 ms	8380 KB	Output is correct
34	Correct	7 ms	8320 KB	Output is correct
35	Correct	7 ms	8448 KB	Output is correct
36	Correct	7 ms	8320 KB	Output is correct
37	Correct	7 ms	8320 KB	Output is correct
38	Correct	7 ms	8320 KB	Output is correct
39	Correct	8 ms	8320 KB	Output is correct
40	Correct	7 ms	8320 KB	Output is correct
41	Correct	6 ms	8320 KB	Output is correct
42	Correct	7 ms	8320 KB	Output is correct
43	Correct	7 ms	8320 KB	Output is correct
44	Correct	7 ms	8320 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	8192 KB	Output is correct
2	Correct	6 ms	8192 KB	Output is correct
3	Correct	6 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	7 ms	8320 KB	Output is correct
6	Correct	7 ms	8320 KB	Output is correct
7	Correct	8 ms	8320 KB	Output is correct
8	Correct	7 ms	8320 KB	Output is correct
9	Correct	7 ms	8320 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	7 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	7 ms	8320 KB	Output is correct
16	Correct	8 ms	8320 KB	Output is correct
17	Correct	7 ms	8320 KB	Output is correct
18	Correct	8 ms	8320 KB	Output is correct
19	Correct	7 ms	8320 KB	Output is correct
20	Correct	7 ms	8320 KB	Output is correct
21	Correct	7 ms	8320 KB	Output is correct
22	Correct	7 ms	8448 KB	Output is correct
23	Correct	7 ms	8320 KB	Output is correct
24	Correct	7 ms	8320 KB	Output is correct
25	Correct	8 ms	8320 KB	Output is correct
26	Correct	7 ms	8320 KB	Output is correct
27	Correct	7 ms	8320 KB	Output is correct
28	Correct	7 ms	8320 KB	Output is correct
29	Correct	6 ms	8320 KB	Output is correct
30	Correct	8 ms	8320 KB	Output is correct
31	Correct	7 ms	8320 KB	Output is correct
32	Correct	7 ms	8320 KB	Output is correct
33	Correct	7 ms	8380 KB	Output is correct
34	Correct	7 ms	8320 KB	Output is correct
35	Correct	7 ms	8448 KB	Output is correct
36	Correct	7 ms	8320 KB	Output is correct
37	Correct	7 ms	8320 KB	Output is correct
38	Correct	7 ms	8320 KB	Output is correct
39	Correct	8 ms	8320 KB	Output is correct
40	Correct	7 ms	8320 KB	Output is correct
41	Correct	6 ms	8320 KB	Output is correct
42	Correct	7 ms	8320 KB	Output is correct
43	Correct	7 ms	8320 KB	Output is correct
44	Correct	7 ms	8320 KB	Output is correct
45	Correct	9 ms	8448 KB	Output is correct
46	Correct	15 ms	8704 KB	Output is correct
47	Correct	16 ms	8704 KB	Output is correct
48	Correct	15 ms	8704 KB	Output is correct
49	Correct	11 ms	8960 KB	Output is correct
50	Correct	11 ms	8960 KB	Output is correct
51	Correct	11 ms	8960 KB	Output is correct
52	Correct	11 ms	8960 KB	Output is correct
53	Correct	12 ms	8832 KB	Output is correct
54	Correct	11 ms	8832 KB	Output is correct
55	Correct	11 ms	8832 KB	Output is correct
56	Correct	11 ms	8832 KB	Output is correct
57	Correct	19 ms	8704 KB	Output is correct
58	Correct	21 ms	8704 KB	Output is correct
59	Correct	21 ms	8704 KB	Output is correct
60	Correct	22 ms	8824 KB	Output is correct
61	Correct	13 ms	8960 KB	Output is correct
62	Correct	12 ms	8832 KB	Output is correct
63	Correct	11 ms	8832 KB	Output is correct
64	Correct	14 ms	8704 KB	Output is correct
65	Correct	15 ms	8704 KB	Output is correct
66	Correct	15 ms	8704 KB	Output is correct
67	Correct	16 ms	8704 KB	Output is correct
68	Correct	12 ms	8960 KB	Output is correct
69	Correct	11 ms	8832 KB	Output is correct
70	Correct	11 ms	8832 KB	Output is correct
71	Correct	11 ms	8880 KB	Output is correct
72	Correct	19 ms	8704 KB	Output is correct
73	Correct	21 ms	8704 KB	Output is correct
74	Correct	11 ms	8832 KB	Output is correct
75	Correct	11 ms	8832 KB	Output is correct
76	Correct	11 ms	8832 KB	Output is correct
77	Correct	12 ms	8832 KB	Output is correct
78	Correct	11 ms	8832 KB	Output is correct
79	Correct	12 ms	8704 KB	Output is correct
80	Correct	11 ms	8736 KB	Output is correct
81	Correct	12 ms	8832 KB	Output is correct
82	Correct	12 ms	8832 KB	Output is correct
83	Correct	12 ms	8704 KB	Output is correct
84	Correct	12 ms	8832 KB	Output is correct
85	Correct	12 ms	8704 KB	Output is correct
86	Correct	12 ms	8704 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	8192 KB	Output is correct
2	Correct	6 ms	8192 KB	Output is correct
3	Correct	6 ms	8320 KB	Output is correct
4	Correct	6 ms	8320 KB	Output is correct
5	Correct	7 ms	8320 KB	Output is correct
6	Correct	7 ms	8320 KB	Output is correct
7	Correct	8 ms	8320 KB	Output is correct
8	Correct	7 ms	8320 KB	Output is correct
9	Correct	7 ms	8320 KB	Output is correct
10	Correct	7 ms	8320 KB	Output is correct
11	Correct	7 ms	8320 KB	Output is correct
12	Correct	6 ms	8320 KB	Output is correct
13	Correct	7 ms	8320 KB	Output is correct
14	Correct	7 ms	8320 KB	Output is correct
15	Correct	7 ms	8320 KB	Output is correct
16	Correct	8 ms	8320 KB	Output is correct
17	Correct	7 ms	8320 KB	Output is correct
18	Correct	8 ms	8320 KB	Output is correct
19	Correct	7 ms	8320 KB	Output is correct
20	Correct	7 ms	8320 KB	Output is correct
21	Correct	7 ms	8320 KB	Output is correct
22	Correct	7 ms	8448 KB	Output is correct
23	Correct	7 ms	8320 KB	Output is correct
24	Correct	7 ms	8320 KB	Output is correct
25	Correct	8 ms	8320 KB	Output is correct
26	Correct	7 ms	8320 KB	Output is correct
27	Correct	7 ms	8320 KB	Output is correct
28	Correct	7 ms	8320 KB	Output is correct
29	Correct	6 ms	8320 KB	Output is correct
30	Correct	8 ms	8320 KB	Output is correct
31	Correct	7 ms	8320 KB	Output is correct
32	Correct	7 ms	8320 KB	Output is correct
33	Correct	7 ms	8380 KB	Output is correct
34	Correct	7 ms	8320 KB	Output is correct
35	Correct	7 ms	8448 KB	Output is correct
36	Correct	7 ms	8320 KB	Output is correct
37	Correct	7 ms	8320 KB	Output is correct
38	Correct	7 ms	8320 KB	Output is correct
39	Correct	8 ms	8320 KB	Output is correct
40	Correct	7 ms	8320 KB	Output is correct
41	Correct	6 ms	8320 KB	Output is correct
42	Correct	7 ms	8320 KB	Output is correct
43	Correct	7 ms	8320 KB	Output is correct
44	Correct	7 ms	8320 KB	Output is correct
45	Correct	9 ms	8448 KB	Output is correct
46	Correct	15 ms	8704 KB	Output is correct
47	Correct	16 ms	8704 KB	Output is correct
48	Correct	15 ms	8704 KB	Output is correct
49	Correct	11 ms	8960 KB	Output is correct
50	Correct	11 ms	8960 KB	Output is correct
51	Correct	11 ms	8960 KB	Output is correct
52	Correct	11 ms	8960 KB	Output is correct
53	Correct	12 ms	8832 KB	Output is correct
54	Correct	11 ms	8832 KB	Output is correct
55	Correct	11 ms	8832 KB	Output is correct
56	Correct	11 ms	8832 KB	Output is correct
57	Correct	19 ms	8704 KB	Output is correct
58	Correct	21 ms	8704 KB	Output is correct
59	Correct	21 ms	8704 KB	Output is correct
60	Correct	22 ms	8824 KB	Output is correct
61	Correct	13 ms	8960 KB	Output is correct
62	Correct	12 ms	8832 KB	Output is correct
63	Correct	11 ms	8832 KB	Output is correct
64	Correct	14 ms	8704 KB	Output is correct
65	Correct	15 ms	8704 KB	Output is correct
66	Correct	15 ms	8704 KB	Output is correct
67	Correct	16 ms	8704 KB	Output is correct
68	Correct	12 ms	8960 KB	Output is correct
69	Correct	11 ms	8832 KB	Output is correct
70	Correct	11 ms	8832 KB	Output is correct
71	Correct	11 ms	8880 KB	Output is correct
72	Correct	19 ms	8704 KB	Output is correct
73	Correct	21 ms	8704 KB	Output is correct
74	Correct	11 ms	8832 KB	Output is correct
75	Correct	11 ms	8832 KB	Output is correct
76	Correct	11 ms	8832 KB	Output is correct
77	Correct	12 ms	8832 KB	Output is correct
78	Correct	11 ms	8832 KB	Output is correct
79	Correct	12 ms	8704 KB	Output is correct
80	Correct	11 ms	8736 KB	Output is correct
81	Correct	12 ms	8832 KB	Output is correct
82	Correct	12 ms	8832 KB	Output is correct
83	Correct	12 ms	8704 KB	Output is correct
84	Correct	12 ms	8832 KB	Output is correct
85	Correct	12 ms	8704 KB	Output is correct
86	Correct	12 ms	8704 KB	Output is correct
87	Correct	33 ms	9472 KB	Output is correct
88	Correct	101 ms	12024 KB	Output is correct
89	Correct	404 ms	20628 KB	Output is correct
90	Correct	405 ms	20604 KB	Output is correct
91	Correct	398 ms	20600 KB	Output is correct
92	Correct	175 ms	26616 KB	Output is correct
93	Correct	170 ms	26616 KB	Output is correct
94	Correct	169 ms	26616 KB	Output is correct
95	Correct	189 ms	23628 KB	Output is correct
96	Correct	194 ms	24048 KB	Output is correct
97	Correct	196 ms	24048 KB	Output is correct
98	Correct	205 ms	24048 KB	Output is correct
99	Correct	185 ms	23032 KB	Output is correct
100	Correct	601 ms	21112 KB	Output is correct
101	Correct	666 ms	21112 KB	Output is correct
102	Correct	666 ms	21256 KB	Output is correct
103	Correct	684 ms	21112 KB	Output is correct
104	Correct	201 ms	23164 KB	Output is correct
105	Correct	191 ms	23032 KB	Output is correct
106	Correct	193 ms	23032 KB	Output is correct
107	Correct	351 ms	19960 KB	Output is correct
108	Correct	400 ms	20088 KB	Output is correct
109	Correct	404 ms	20216 KB	Output is correct
110	Correct	170 ms	25976 KB	Output is correct
111	Correct	185 ms	23664 KB	Output is correct
112	Correct	188 ms	23560 KB	Output is correct
113	Correct	168 ms	22392 KB	Output is correct
114	Correct	625 ms	20728 KB	Output is correct
115	Correct	696 ms	20596 KB	Output is correct
116	Correct	189 ms	22392 KB	Output is correct
117	Correct	177 ms	21624 KB	Output is correct
118	Correct	185 ms	21112 KB	Output is correct
119	Correct	182 ms	20856 KB	Output is correct
120	Correct	183 ms	21112 KB	Output is correct
121	Correct	186 ms	20856 KB	Output is correct
122	Correct	186 ms	20728 KB	Output is correct
123	Correct	201 ms	21624 KB	Output is correct
124	Correct	213 ms	21240 KB	Output is correct
125	Correct	208 ms	20984 KB	Output is correct
126	Correct	201 ms	21240 KB	Output is correct
127	Correct	204 ms	20856 KB	Output is correct
128	Correct	204 ms	20728 KB	Output is correct

답안 #305619

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