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답안 #632948

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
632948 2022-08-21T09:44:32 Z Arnch Designated Cities (JOI19_designated_cities) C++17
100 / 100
 873 ms 60988 KB 
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;

constexpr int N = 2e5 + 10;

int n;
ll total;
ll ps[N], cnt[N], par[N], up[N];
int st[N], fn[N], id[N], tim;
ll ans[N];

bool mark[N];

vector<pair<int, int> > adj[N];

void preDFS(int x, int p = 0) {
	for(auto j : adj[x]) {
		if(j.first == p) {
			up[x] = up[p] + j.second;
			break;
		}
	}
	for(auto j : adj[x]) {
		if(j.first == p) {
			continue;
		}
		cnt[j.first] = j.second;
		ps[j.first] = ps[x] + j.second;
		preDFS(j.first, x);
	}
}
void DFS(int x, int p = 0) {
	id[tim] = x;
	st[x] = tim++;
	par[x] = p;
	for(auto j : adj[x]) {
		if(j.first == p) {
			continue;
		}
		total += j.second;
		DFS(j.first, x);
	}
	fn[x] = tim;
}

struct node {
	ll cnt, id, lz;
	node() {
		cnt = id = lz = 0;
	}
} x[N << 2];

void build(int l = 0, int r = n, int v = 1) {
	if(r - l < 2) {
		x[v].cnt = ps[id[l]];
		x[v].id = id[l];
		return;
	}
	int mid = (l + r) >> 1;
	build(l, mid, 2 * v), build(mid, r, 2 * v + 1);

	x[v].cnt = max(x[2 * v].cnt, x[2 * v + 1].cnt);
	x[v].id = (x[v].cnt == x[2 * v].cnt)? (x[2 * v].id): (x[2 * v + 1].id);
}
void put(int l, int r, int v) {
	if(x[v].lz == 0) return;
	
	x[2 * v].cnt -= x[v].lz, x[2 * v + 1].cnt -= x[v].lz;
	x[2 * v].lz += x[v].lz, x[2 * v + 1].lz += x[v].lz;

	x[v].lz = 0;
}
void change(int s, int e, int val, int l = 0, int r = n, int v = 1) {
	if(r <= s || l >= e) return;
	if(l >= s && r <= e) {
		x[v].cnt -= val;
		x[v].lz += val;
		return;
	}
	put(l, r, v);
	int mid = (l + r) >> 1;
	change(s, e, val, l, mid, 2 * v), change(s, e, val, mid, r, 2 * v + 1);
	
	x[v].cnt = max(x[2 * v].cnt, x[2 * v + 1].cnt);
	x[v].id = (x[v].cnt == x[2 * v].cnt)? (x[2 * v].id): (x[2 * v + 1].id);
}

int main() {
	cin >>n;
	for(int i = 0; i < n - 1; i++) {
		int u, v, w, wp; cin >>u >>v >>w >>wp;
		adj[u].push_back({v, w}), adj[v].push_back({u, wp});
	}

	preDFS(1);
	
	int root = max_element(ps + 1, ps + n + 1) - ps;

	ps[root] = up[root] = 0;
	preDFS(root);
	DFS(root);
	mark[root] = 1;

	for(int i = 1; i <= n; i++) ans[1] = min(ans[1], up[i] - ps[i]);
	
	build();
	
	ans[1] += total;
	for(int i = 2; i <= n; i++) {
		int v = x[1].id;
		while(!mark[v]) {
			mark[v] = 1;
			total -= cnt[v];
			change(st[v], fn[v], cnt[v]);
			v = par[v];
		}
		ans[i] = total;
	}

	int q; cin >>q;
	for(int i = 0; i < q; i++) {
		int nu; cin >>nu;

		cout<<ans[nu] <<endl;
	}

}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23732 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 11 ms 23800 KB Output is correct
6 Correct 10 ms 23792 KB Output is correct
7 Correct 12 ms 23804 KB Output is correct
8 Correct 11 ms 23760 KB Output is correct
9 Correct 14 ms 23764 KB Output is correct
10 Correct 11 ms 23784 KB Output is correct
11 Correct 10 ms 23792 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23832 KB Output is correct
2 Correct 524 ms 41396 KB Output is correct
3 Correct 549 ms 52940 KB Output is correct
4 Correct 439 ms 41488 KB Output is correct
5 Correct 541 ms 41404 KB Output is correct
6 Correct 538 ms 42920 KB Output is correct
7 Correct 520 ms 41500 KB Output is correct
8 Correct 579 ms 52320 KB Output is correct
9 Correct 450 ms 41988 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23836 KB Output is correct
2 Correct 541 ms 41428 KB Output is correct
3 Correct 527 ms 59316 KB Output is correct
4 Correct 498 ms 46460 KB Output is correct
5 Correct 552 ms 47820 KB Output is correct
6 Correct 562 ms 49808 KB Output is correct
7 Correct 452 ms 48116 KB Output is correct
8 Correct 572 ms 55412 KB Output is correct
9 Correct 459 ms 48248 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23732 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 11 ms 23800 KB Output is correct
6 Correct 10 ms 23792 KB Output is correct
7 Correct 12 ms 23804 KB Output is correct
8 Correct 11 ms 23760 KB Output is correct
9 Correct 14 ms 23764 KB Output is correct
10 Correct 11 ms 23784 KB Output is correct
11 Correct 10 ms 23792 KB Output is correct
12 Correct 11 ms 23796 KB Output is correct
13 Correct 20 ms 24028 KB Output is correct
14 Correct 17 ms 24168 KB Output is correct
15 Correct 19 ms 24064 KB Output is correct
16 Correct 18 ms 24020 KB Output is correct
17 Correct 17 ms 24020 KB Output is correct
18 Correct 17 ms 24020 KB Output is correct
19 Correct 19 ms 24092 KB Output is correct
20 Correct 18 ms 24020 KB Output is correct
21 Correct 17 ms 24060 KB Output is correct
22 Correct 20 ms 23988 KB Output is correct
23 Correct 18 ms 24064 KB Output is correct
24 Correct 17 ms 24072 KB Output is correct
25 Correct 17 ms 24136 KB Output is correct
26 Correct 17 ms 24092 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23832 KB Output is correct
2 Correct 524 ms 41396 KB Output is correct
3 Correct 549 ms 52940 KB Output is correct
4 Correct 439 ms 41488 KB Output is correct
5 Correct 541 ms 41404 KB Output is correct
6 Correct 538 ms 42920 KB Output is correct
7 Correct 520 ms 41500 KB Output is correct
8 Correct 579 ms 52320 KB Output is correct
9 Correct 450 ms 41988 KB Output is correct
10 Correct 13 ms 23836 KB Output is correct
11 Correct 541 ms 41428 KB Output is correct
12 Correct 527 ms 59316 KB Output is correct
13 Correct 498 ms 46460 KB Output is correct
14 Correct 552 ms 47820 KB Output is correct
15 Correct 562 ms 49808 KB Output is correct
16 Correct 452 ms 48116 KB Output is correct
17 Correct 572 ms 55412 KB Output is correct
18 Correct 459 ms 48248 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 553 ms 47804 KB Output is correct
21 Correct 498 ms 59268 KB Output is correct
22 Correct 472 ms 46436 KB Output is correct
23 Correct 539 ms 47824 KB Output is correct
24 Correct 519 ms 46648 KB Output is correct
25 Correct 534 ms 47768 KB Output is correct
26 Correct 480 ms 46700 KB Output is correct
27 Correct 560 ms 47768 KB Output is correct
28 Correct 585 ms 49536 KB Output is correct
29 Correct 577 ms 47840 KB Output is correct
30 Correct 485 ms 46968 KB Output is correct
31 Correct 474 ms 48036 KB Output is correct
32 Correct 571 ms 55796 KB Output is correct
33 Correct 472 ms 48432 KB Output is correct

Subtask #6
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 11 ms 23732 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 11 ms 23764 KB Output is correct
5 Correct 11 ms 23800 KB Output is correct
6 Correct 10 ms 23792 KB Output is correct
7 Correct 12 ms 23804 KB Output is correct
8 Correct 11 ms 23760 KB Output is correct
9 Correct 14 ms 23764 KB Output is correct
10 Correct 11 ms 23784 KB Output is correct
11 Correct 10 ms 23792 KB Output is correct
12 Correct 11 ms 23832 KB Output is correct
13 Correct 524 ms 41396 KB Output is correct
14 Correct 549 ms 52940 KB Output is correct
15 Correct 439 ms 41488 KB Output is correct
16 Correct 541 ms 41404 KB Output is correct
17 Correct 538 ms 42920 KB Output is correct
18 Correct 520 ms 41500 KB Output is correct
19 Correct 579 ms 52320 KB Output is correct
20 Correct 450 ms 41988 KB Output is correct
21 Correct 13 ms 23836 KB Output is correct
22 Correct 541 ms 41428 KB Output is correct
23 Correct 527 ms 59316 KB Output is correct
24 Correct 498 ms 46460 KB Output is correct
25 Correct 552 ms 47820 KB Output is correct
26 Correct 562 ms 49808 KB Output is correct
27 Correct 452 ms 48116 KB Output is correct
28 Correct 572 ms 55412 KB Output is correct
29 Correct 459 ms 48248 KB Output is correct
30 Correct 11 ms 23796 KB Output is correct
31 Correct 20 ms 24028 KB Output is correct
32 Correct 17 ms 24168 KB Output is correct
33 Correct 19 ms 24064 KB Output is correct
34 Correct 18 ms 24020 KB Output is correct
35 Correct 17 ms 24020 KB Output is correct
36 Correct 17 ms 24020 KB Output is correct
37 Correct 19 ms 24092 KB Output is correct
38 Correct 18 ms 24020 KB Output is correct
39 Correct 17 ms 24060 KB Output is correct
40 Correct 20 ms 23988 KB Output is correct
41 Correct 18 ms 24064 KB Output is correct
42 Correct 17 ms 24072 KB Output is correct
43 Correct 17 ms 24136 KB Output is correct
44 Correct 17 ms 24092 KB Output is correct
45 Correct 11 ms 23764 KB Output is correct
46 Correct 553 ms 47804 KB Output is correct
47 Correct 498 ms 59268 KB Output is correct
48 Correct 472 ms 46436 KB Output is correct
49 Correct 539 ms 47824 KB Output is correct
50 Correct 519 ms 46648 KB Output is correct
51 Correct 534 ms 47768 KB Output is correct
52 Correct 480 ms 46700 KB Output is correct
53 Correct 560 ms 47768 KB Output is correct
54 Correct 585 ms 49536 KB Output is correct
55 Correct 577 ms 47840 KB Output is correct
56 Correct 485 ms 46968 KB Output is correct
57 Correct 474 ms 48036 KB Output is correct
58 Correct 571 ms 55796 KB Output is correct
59 Correct 472 ms 48432 KB Output is correct
60 Correct 11 ms 23796 KB Output is correct
61 Correct 871 ms 50432 KB Output is correct
62 Correct 838 ms 60988 KB Output is correct
63 Correct 751 ms 49068 KB Output is correct
64 Correct 872 ms 50516 KB Output is correct
65 Correct 842 ms 49196 KB Output is correct
66 Correct 873 ms 50580 KB Output is correct
67 Correct 813 ms 49152 KB Output is correct
68 Correct 812 ms 50592 KB Output is correct
69 Correct 866 ms 52136 KB Output is correct
70 Correct 839 ms 50260 KB Output is correct
71 Correct 818 ms 49696 KB Output is correct
72 Correct 831 ms 51252 KB Output is correct
73 Correct 860 ms 57960 KB Output is correct
74 Correct 780 ms 52648 KB Output is correct