oj.uz

Submission #1113005

# Submission time Handle Problem Language Result Execution time Memory
1113005 2024-11-15T11:25:36 Z akzytr Race (IOI11_race) C++17
43 / 100
 3000 ms 108016 KB 
#include "race.h"
#include <bits/stdc++.h>
#define ve vector
#define pb push_back
#define ar array
#define ll long long
using namespace std;

const int MAXN = 3e5;
set<int> adj[MAXN];
map<ar<int, 2>, int> w;

int K;
int ANS = 1e9;

int sub[MAXN];
int processed[MAXN];

void find_size(int x, int p) {
	sub[x] = 1;
	for(int i : adj[x]) {
		if(i != p && !processed[i]) {
			find_size(i, x);
			sub[x] += sub[i];
		}
	}
}
int find_centroid(int x, int p, int n) {
	for(int i : adj[x]) {
		if(sub[i] > n / 2 && i != p) {
			return find_centroid(i, x, n);
		}
	}
	return x;
}

void dfs(int x, int p, map<int, int> &vis, map<int, int> &mi_edge, int we, int num_edge, bool upd) {
	if(upd) {
		if(vis[we]) {
			mi_edge[we] = min(mi_edge[we], num_edge);
		} else {
			vis[we] = 1;
			mi_edge[we] = num_edge;
		}
	} else {
		if(vis[K - we]) {
			ANS = min(ANS, num_edge + mi_edge[K - we]);
		}
	}

	for(int i : adj[x]) {
		if(i != p && we + w[{i, x}] <= K && !processed[i]) {
			dfs(i, x, vis, mi_edge, we + w[{i, x}], num_edge + 1, upd);
		}
	}
}
void process_centroid(int x) {
	map<int, int> vis;
	map<int, int> mi_edge;
	mi_edge[0] = 0;
	vis[0] = 1;

	for(int i : adj[x]) {
		dfs(i, x, vis, mi_edge, w[{i, x}], 1, false);
		dfs(i, x, vis, mi_edge, w[{i, x}], 1, true);
	}
	processed[x] = 1;
}

void decompo(int x) {
	find_size(x, -1);
	int centroid = find_centroid(x, -1, sub[x]);
	process_centroid(centroid);

	for(int i : adj[centroid]) {
		adj[i].erase(centroid);
	}

	for(int i : adj[centroid]) {
		decompo(i);
	}
}

int best_path(int N, int Ked, int H[][2], int L[]) {
	fill(processed, processed + MAXN, 0);
	for(int i = 0; i < N - 1; i++) {
		int a, b;
		a = H[i][0];
		b = H[i][1];

		adj[a].insert(b);
		adj[b].insert(a);
		w[{a, b}] = L[i];
		w[{b, a}] = L[i];
	}
	K = Ked;
	decompo(0);
	if(ANS != 1e9) {
		return ANS;
	}
	return -1;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 20560 KB Output is correct
2 Correct 4 ms 18512 KB Output is correct
3 Correct 5 ms 16720 KB Output is correct
4 Correct 6 ms 16720 KB Output is correct
5 Correct 5 ms 16848 KB Output is correct
6 Correct 6 ms 16924 KB Output is correct
7 Correct 6 ms 16720 KB Output is correct
8 Correct 6 ms 16720 KB Output is correct
9 Correct 7 ms 16936 KB Output is correct
10 Correct 7 ms 16892 KB Output is correct
11 Correct 9 ms 16720 KB Output is correct
12 Correct 7 ms 16720 KB Output is correct
13 Correct 6 ms 16720 KB Output is correct
14 Correct 5 ms 20560 KB Output is correct
15 Correct 4 ms 20560 KB Output is correct
16 Correct 4 ms 18512 KB Output is correct
17 Correct 5 ms 20560 KB Output is correct
18 Correct 5 ms 16720 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 20560 KB Output is correct
2 Correct 4 ms 18512 KB Output is correct
3 Correct 5 ms 16720 KB Output is correct
4 Correct 6 ms 16720 KB Output is correct
5 Correct 5 ms 16848 KB Output is correct
6 Correct 6 ms 16924 KB Output is correct
7 Correct 6 ms 16720 KB Output is correct
8 Correct 6 ms 16720 KB Output is correct
9 Correct 7 ms 16936 KB Output is correct
10 Correct 7 ms 16892 KB Output is correct
11 Correct 9 ms 16720 KB Output is correct
12 Correct 7 ms 16720 KB Output is correct
13 Correct 6 ms 16720 KB Output is correct
14 Correct 5 ms 20560 KB Output is correct
15 Correct 4 ms 20560 KB Output is correct
16 Correct 4 ms 18512 KB Output is correct
17 Correct 5 ms 20560 KB Output is correct
18 Correct 5 ms 16720 KB Output is correct
19 Correct 5 ms 16720 KB Output is correct
20 Correct 4 ms 16720 KB Output is correct
21 Correct 7 ms 18768 KB Output is correct
22 Correct 5 ms 16976 KB Output is correct
23 Correct 5 ms 18512 KB Output is correct
24 Correct 7 ms 16976 KB Output is correct
25 Correct 9 ms 17248 KB Output is correct
26 Correct 7 ms 16976 KB Output is correct
27 Correct 5 ms 16976 KB Output is correct
28 Correct 8 ms 18768 KB Output is correct
29 Correct 7 ms 17232 KB Output is correct
30 Correct 9 ms 17400 KB Output is correct
31 Correct 9 ms 17260 KB Output is correct
32 Correct 9 ms 17232 KB Output is correct
33 Correct 11 ms 17368 KB Output is correct
34 Correct 7 ms 20560 KB Output is correct
35 Correct 9 ms 16976 KB Output is correct
36 Correct 11 ms 16976 KB Output is correct
37 Correct 8 ms 18740 KB Output is correct
38 Correct 12 ms 17400 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 20560 KB Output is correct
2 Correct 4 ms 18512 KB Output is correct
3 Correct 5 ms 16720 KB Output is correct
4 Correct 6 ms 16720 KB Output is correct
5 Correct 5 ms 16848 KB Output is correct
6 Correct 6 ms 16924 KB Output is correct
7 Correct 6 ms 16720 KB Output is correct
8 Correct 6 ms 16720 KB Output is correct
9 Correct 7 ms 16936 KB Output is correct
10 Correct 7 ms 16892 KB Output is correct
11 Correct 9 ms 16720 KB Output is correct
12 Correct 7 ms 16720 KB Output is correct
13 Correct 6 ms 16720 KB Output is correct
14 Correct 5 ms 20560 KB Output is correct
15 Correct 4 ms 20560 KB Output is correct
16 Correct 4 ms 18512 KB Output is correct
17 Correct 5 ms 20560 KB Output is correct
18 Correct 5 ms 16720 KB Output is correct
19 Correct 819 ms 41288 KB Output is correct
20 Correct 835 ms 39912 KB Output is correct
21 Correct 992 ms 46152 KB Output is correct
22 Correct 1057 ms 41112 KB Output is correct
23 Correct 348 ms 41412 KB Output is correct
24 Correct 348 ms 42944 KB Output is correct
25 Correct 844 ms 45392 KB Output is correct
26 Correct 611 ms 49160 KB Output is correct
27 Correct 573 ms 65164 KB Output is correct
28 Correct 729 ms 81724 KB Output is correct
29 Correct 812 ms 80200 KB Output is correct
30 Correct 666 ms 65740 KB Output is correct
31 Correct 653 ms 67124 KB Output is correct
32 Correct 980 ms 65608 KB Output is correct
33 Correct 1483 ms 65548 KB Output is correct
34 Correct 679 ms 66376 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 20560 KB Output is correct
2 Correct 4 ms 18512 KB Output is correct
3 Correct 5 ms 16720 KB Output is correct
4 Correct 6 ms 16720 KB Output is correct
5 Correct 5 ms 16848 KB Output is correct
6 Correct 6 ms 16924 KB Output is correct
7 Correct 6 ms 16720 KB Output is correct
8 Correct 6 ms 16720 KB Output is correct
9 Correct 7 ms 16936 KB Output is correct
10 Correct 7 ms 16892 KB Output is correct
11 Correct 9 ms 16720 KB Output is correct
12 Correct 7 ms 16720 KB Output is correct
13 Correct 6 ms 16720 KB Output is correct
14 Correct 5 ms 20560 KB Output is correct
15 Correct 4 ms 20560 KB Output is correct
16 Correct 4 ms 18512 KB Output is correct
17 Correct 5 ms 20560 KB Output is correct
18 Correct 5 ms 16720 KB Output is correct
19 Correct 5 ms 16720 KB Output is correct
20 Correct 4 ms 16720 KB Output is correct
21 Correct 7 ms 18768 KB Output is correct
22 Correct 5 ms 16976 KB Output is correct
23 Correct 5 ms 18512 KB Output is correct
24 Correct 7 ms 16976 KB Output is correct
25 Correct 9 ms 17248 KB Output is correct
26 Correct 7 ms 16976 KB Output is correct
27 Correct 5 ms 16976 KB Output is correct
28 Correct 8 ms 18768 KB Output is correct
29 Correct 7 ms 17232 KB Output is correct
30 Correct 9 ms 17400 KB Output is correct
31 Correct 9 ms 17260 KB Output is correct
32 Correct 9 ms 17232 KB Output is correct
33 Correct 11 ms 17368 KB Output is correct
34 Correct 7 ms 20560 KB Output is correct
35 Correct 9 ms 16976 KB Output is correct
36 Correct 11 ms 16976 KB Output is correct
37 Correct 8 ms 18740 KB Output is correct
38 Correct 12 ms 17400 KB Output is correct
39 Correct 819 ms 41288 KB Output is correct
40 Correct 835 ms 39912 KB Output is correct
41 Correct 992 ms 46152 KB Output is correct
42 Correct 1057 ms 41112 KB Output is correct
43 Correct 348 ms 41412 KB Output is correct
44 Correct 348 ms 42944 KB Output is correct
45 Correct 844 ms 45392 KB Output is correct
46 Correct 611 ms 49160 KB Output is correct
47 Correct 573 ms 65164 KB Output is correct
48 Correct 729 ms 81724 KB Output is correct
49 Correct 812 ms 80200 KB Output is correct
50 Correct 666 ms 65740 KB Output is correct
51 Correct 653 ms 67124 KB Output is correct
52 Correct 980 ms 65608 KB Output is correct
53 Correct 1483 ms 65548 KB Output is correct
54 Correct 679 ms 66376 KB Output is correct
55 Correct 66 ms 21236 KB Output is correct
56 Correct 53 ms 19164 KB Output is correct
57 Correct 742 ms 41288 KB Output is correct
58 Correct 139 ms 41032 KB Output is correct
59 Correct 1121 ms 59324 KB Output is correct
60 Execution timed out 3059 ms 108016 KB Time limit exceeded
61 Halted 0 ms 0 KB -