oj.uz

Submission #88138

# Submission time Handle Problem Language Result Execution time Memory
88138 2018-12-04T00:32:08 Z KCSC Election Campaign (JOI15_election_campaign) C++14
100 / 100
 503 ms 99328 KB 
#include <bits/stdc++.h>
using namespace std;

const int LOG = 19;
const int DIM = 200005;

int bit[DIM], anc[DIM][LOG], dp[DIM], aux[DIM], lev[DIM], fst[DIM], lst[DIM];
vector<tuple<int, int, int>> lis[DIM]; vector<int> edg[DIM];

void update(int p, int x) {
	for (; p < DIM; p += (p & -p)) {
		bit[p] += x; } }

int query(int p, int x = 0) {
	for (; p > 0; p -= (p & -p)) {
		x += bit[p]; } 
	return x; }

int lca(int x, int y) {
	if (lev[x] > lev[y]) {
		swap(x, y); }
	for (int i = LOG - 1; i >= 0; --i) {
		if (lev[y] - (1 << i) >= lev[x]) {
			y = anc[y][i]; } }
	for (int i = LOG - 1; i >= 0; --i) {		
		if (anc[x][i] != anc[y][i]) {
			x = anc[x][i]; y = anc[y][i]; } }
	return (x == y ? x : anc[x][0]); }

void dfs1(int x, int f) {
	static int nr = 0;
	fst[x] = ++nr; lev[x] = lev[f] + 1; anc[x][0] = f;
	for (int i = 1; i < LOG; ++i) {
		anc[x][i] = anc[anc[x][i - 1]][i - 1]; }
	for (int y : edg[x]) {
		if (y != f) {
			dfs1(y, x); } } 
	lst[x] = ++nr; }

void dfs2(int x, int f) {
	for (int y : edg[x]) {
		if (y != f) {
			dfs2(y, x); aux[x] += dp[y]; } }
	dp[x] = aux[x];
	for (auto &tp : lis[x]) {
		int l, r, c; tie(l, r, c) = tp;
		dp[x] = max(dp[x], query(fst[l]) + query(fst[r]) + aux[x] + c); }
	update(fst[x], aux[x] - dp[x]); update(lst[x], dp[x] - aux[x]); }	

int main(void) {
#ifdef HOME
	freopen("election.in", "r", stdin);
	freopen("election.out", "w", stdout); 
#endif
	int n; cin >> n;
	for (int i = 1; i < n; ++i) {
		int x, y; cin >> x >> y;
		edg[x].push_back(y); edg[y].push_back(x); }
	dfs1(1, 0); int m; cin >> m;
	while (m--) {
		int x, y, c; cin >> x >> y >> c;
		lis[lca(x, y)].emplace_back(x, y, c); }
	dfs2(1, 0); cout << dp[1] << "\n";
	return 0; }

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 9848 KB Output is correct
2 Correct 13 ms 9856 KB Output is correct
3 Correct 10 ms 9920 KB Output is correct
4 Correct 11 ms 9968 KB Output is correct
5 Correct 176 ms 24580 KB Output is correct
6 Correct 128 ms 33364 KB Output is correct
7 Correct 172 ms 33364 KB Output is correct
8 Correct 152 ms 33364 KB Output is correct
9 Correct 177 ms 33364 KB Output is correct
10 Correct 147 ms 33364 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 33364 KB Output is correct
2 Correct 10 ms 33364 KB Output is correct
3 Correct 12 ms 33364 KB Output is correct
4 Correct 325 ms 42536 KB Output is correct
5 Correct 344 ms 45052 KB Output is correct
6 Correct 327 ms 47548 KB Output is correct
7 Correct 350 ms 49872 KB Output is correct
8 Correct 330 ms 52324 KB Output is correct
9 Correct 340 ms 54948 KB Output is correct
10 Correct 317 ms 57248 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 33364 KB Output is correct
2 Correct 10 ms 33364 KB Output is correct
3 Correct 12 ms 33364 KB Output is correct
4 Correct 325 ms 42536 KB Output is correct
5 Correct 344 ms 45052 KB Output is correct
6 Correct 327 ms 47548 KB Output is correct
7 Correct 350 ms 49872 KB Output is correct
8 Correct 330 ms 52324 KB Output is correct
9 Correct 340 ms 54948 KB Output is correct
10 Correct 317 ms 57248 KB Output is correct
11 Correct 39 ms 57248 KB Output is correct
12 Correct 346 ms 60492 KB Output is correct
13 Correct 359 ms 62992 KB Output is correct
14 Correct 324 ms 65844 KB Output is correct
15 Correct 347 ms 68540 KB Output is correct
16 Correct 322 ms 71268 KB Output is correct
17 Correct 354 ms 74036 KB Output is correct
18 Correct 336 ms 76864 KB Output is correct
19 Correct 288 ms 77512 KB Output is correct
20 Correct 291 ms 77548 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 311 ms 77548 KB Output is correct
2 Correct 284 ms 77548 KB Output is correct
3 Correct 423 ms 77548 KB Output is correct
4 Correct 319 ms 77548 KB Output is correct
5 Correct 439 ms 77548 KB Output is correct
6 Correct 313 ms 77548 KB Output is correct
7 Correct 503 ms 77548 KB Output is correct
8 Correct 422 ms 77548 KB Output is correct
9 Correct 292 ms 77708 KB Output is correct
10 Correct 405 ms 77708 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 9848 KB Output is correct
2 Correct 13 ms 9856 KB Output is correct
3 Correct 10 ms 9920 KB Output is correct
4 Correct 11 ms 9968 KB Output is correct
5 Correct 176 ms 24580 KB Output is correct
6 Correct 128 ms 33364 KB Output is correct
7 Correct 172 ms 33364 KB Output is correct
8 Correct 152 ms 33364 KB Output is correct
9 Correct 177 ms 33364 KB Output is correct
10 Correct 147 ms 33364 KB Output is correct
11 Correct 12 ms 77708 KB Output is correct
12 Correct 14 ms 77708 KB Output is correct
13 Correct 12 ms 77708 KB Output is correct
14 Correct 12 ms 77708 KB Output is correct
15 Correct 12 ms 77708 KB Output is correct
16 Correct 14 ms 77708 KB Output is correct
17 Correct 13 ms 77708 KB Output is correct
18 Correct 13 ms 77708 KB Output is correct
19 Correct 14 ms 77708 KB Output is correct
20 Correct 14 ms 77708 KB Output is correct

Subtask #6
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 9848 KB Output is correct
2 Correct 13 ms 9856 KB Output is correct
3 Correct 10 ms 9920 KB Output is correct
4 Correct 11 ms 9968 KB Output is correct
5 Correct 176 ms 24580 KB Output is correct
6 Correct 128 ms 33364 KB Output is correct
7 Correct 172 ms 33364 KB Output is correct
8 Correct 152 ms 33364 KB Output is correct
9 Correct 177 ms 33364 KB Output is correct
10 Correct 147 ms 33364 KB Output is correct
11 Correct 11 ms 33364 KB Output is correct
12 Correct 10 ms 33364 KB Output is correct
13 Correct 12 ms 33364 KB Output is correct
14 Correct 325 ms 42536 KB Output is correct
15 Correct 344 ms 45052 KB Output is correct
16 Correct 327 ms 47548 KB Output is correct
17 Correct 350 ms 49872 KB Output is correct
18 Correct 330 ms 52324 KB Output is correct
19 Correct 340 ms 54948 KB Output is correct
20 Correct 317 ms 57248 KB Output is correct
21 Correct 39 ms 57248 KB Output is correct
22 Correct 346 ms 60492 KB Output is correct
23 Correct 359 ms 62992 KB Output is correct
24 Correct 324 ms 65844 KB Output is correct
25 Correct 347 ms 68540 KB Output is correct
26 Correct 322 ms 71268 KB Output is correct
27 Correct 354 ms 74036 KB Output is correct
28 Correct 336 ms 76864 KB Output is correct
29 Correct 288 ms 77512 KB Output is correct
30 Correct 291 ms 77548 KB Output is correct
31 Correct 311 ms 77548 KB Output is correct
32 Correct 284 ms 77548 KB Output is correct
33 Correct 423 ms 77548 KB Output is correct
34 Correct 319 ms 77548 KB Output is correct
35 Correct 439 ms 77548 KB Output is correct
36 Correct 313 ms 77548 KB Output is correct
37 Correct 503 ms 77548 KB Output is correct
38 Correct 422 ms 77548 KB Output is correct
39 Correct 292 ms 77708 KB Output is correct
40 Correct 405 ms 77708 KB Output is correct
41 Correct 12 ms 77708 KB Output is correct
42 Correct 14 ms 77708 KB Output is correct
43 Correct 12 ms 77708 KB Output is correct
44 Correct 12 ms 77708 KB Output is correct
45 Correct 12 ms 77708 KB Output is correct
46 Correct 14 ms 77708 KB Output is correct
47 Correct 13 ms 77708 KB Output is correct
48 Correct 13 ms 77708 KB Output is correct
49 Correct 14 ms 77708 KB Output is correct
50 Correct 14 ms 77708 KB Output is correct
51 Correct 414 ms 77708 KB Output is correct
52 Correct 348 ms 78044 KB Output is correct
53 Correct 462 ms 78044 KB Output is correct
54 Correct 294 ms 78044 KB Output is correct
55 Correct 340 ms 78044 KB Output is correct
56 Correct 295 ms 84616 KB Output is correct
57 Correct 453 ms 84616 KB Output is correct
58 Correct 313 ms 84616 KB Output is correct
59 Correct 391 ms 84868 KB Output is correct
60 Correct 360 ms 95636 KB Output is correct
61 Correct 422 ms 95636 KB Output is correct
62 Correct 310 ms 95636 KB Output is correct
63 Correct 402 ms 95636 KB Output is correct
64 Correct 370 ms 99328 KB Output is correct
65 Correct 479 ms 99328 KB Output is correct
66 Correct 319 ms 99328 KB Output is correct
67 Correct 372 ms 99328 KB Output is correct
68 Correct 332 ms 99328 KB Output is correct
69 Correct 385 ms 99328 KB Output is correct
70 Correct 294 ms 99328 KB Output is correct