oj.uz

Submission #703629

# Submission time Handle Problem Language Result Execution time Memory
703629 2023-02-27T21:44:54 Z boyliguanhan Race (IOI11_race) C++17
100 / 100
 1136 ms 42388 KB 
#include "race.h"
#include<vector>
#include<utility>
#include<map>
#include<algorithm>
using namespace std;
#define int long long
#define inf 1000000000
vector<pair<int, int>> adj[200100];
int ans = inf, rt, k, sz[200100];
bool vis[200100];
map<int, int> cache;
void csz(int n, int p, int tot) {
	int ms = 0;
	sz[n] = 1;
	for (auto &i : adj[n])
		if (i.first != p && !vis[i.first])
			csz(i.first, n, tot), ms = max(ms, sz[i.first]), sz[n] += sz[i.first];
	if (ms <= tot / 2 && sz[n] >= tot / 2)
		rt = n;
}
void cans(int n, int p, int d1, int d2) {
	if (d1 > k)
		return;
	if (cache.count(k - d1))
		ans = min(ans, d2 + cache[k - d1]);
	for (auto &i : adj[n])
		if (i.first != p && !vis[i.first])
			cans(i.first, n, d1 + i.second, d2 + 1);
}
void ccache(int n, int p, int d1, int d2) {
	if (d1 > k)
		return;
	if (cache.count(d1))
		cache[d1] = min(cache[d1], d2);
	else
		cache[d1] = d2;
	for (auto& i : adj[n])
		if (i.first != p && !vis[i.first])
			ccache(i.first, n, d1 + i.second, d2 + 1);
}
void decomp(int n, int tot) {
	vector<int> v;
	cache.clear();
	cache[0];
	csz(n, -1, tot);
	n = rt;
	vis[n] = 1;
	for (auto &i : adj[n]) {
		if (!vis[i.first])
			cans(i.first, -1, i.second, 1), ccache(i.first, -1, i.second, 1);
		v.push_back(sz[i.first]);
	}
	int x = 0;
	for (auto &i : adj[n]) {
		if (!vis[i.first])
			decomp(i.first, v[x]);
		x++;
	}
}
signed best_path(signed N, signed K, signed H[][2], signed L[]) {
	for (int i = 0; i < N - 1; i++)
		adj[H[i][0]].push_back({ H[i][1], L[i] }), adj[H[i][1]].push_back({ H[i][0], L[i] });
	k = K;
	decomp(1, N);
	return ans == inf ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 2 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 2 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5016 KB Output is correct
24 Correct 5 ms 5016 KB Output is correct
25 Correct 4 ms 5144 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5124 KB Output is correct
29 Correct 4 ms 5140 KB Output is correct
30 Correct 4 ms 5140 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5016 KB Output is correct
37 Correct 3 ms 5116 KB Output is correct
38 Correct 4 ms 5140 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 2 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 242 ms 12148 KB Output is correct
20 Correct 252 ms 12040 KB Output is correct
21 Correct 248 ms 12060 KB Output is correct
22 Correct 259 ms 12216 KB Output is correct
23 Correct 72 ms 12460 KB Output is correct
24 Correct 79 ms 11724 KB Output is correct
25 Correct 136 ms 18764 KB Output is correct
26 Correct 101 ms 19748 KB Output is correct
27 Correct 190 ms 19784 KB Output is correct
28 Correct 283 ms 33100 KB Output is correct
29 Correct 270 ms 27908 KB Output is correct
30 Correct 188 ms 19792 KB Output is correct
31 Correct 192 ms 19788 KB Output is correct
32 Correct 216 ms 19904 KB Output is correct
33 Correct 255 ms 18580 KB Output is correct
34 Correct 161 ms 18508 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 2 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5016 KB Output is correct
24 Correct 5 ms 5016 KB Output is correct
25 Correct 4 ms 5144 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5124 KB Output is correct
29 Correct 4 ms 5140 KB Output is correct
30 Correct 4 ms 5140 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5016 KB Output is correct
37 Correct 3 ms 5116 KB Output is correct
38 Correct 4 ms 5140 KB Output is correct
39 Correct 242 ms 12148 KB Output is correct
40 Correct 252 ms 12040 KB Output is correct
41 Correct 248 ms 12060 KB Output is correct
42 Correct 259 ms 12216 KB Output is correct
43 Correct 72 ms 12460 KB Output is correct
44 Correct 79 ms 11724 KB Output is correct
45 Correct 136 ms 18764 KB Output is correct
46 Correct 101 ms 19748 KB Output is correct
47 Correct 190 ms 19784 KB Output is correct
48 Correct 283 ms 33100 KB Output is correct
49 Correct 270 ms 27908 KB Output is correct
50 Correct 188 ms 19792 KB Output is correct
51 Correct 192 ms 19788 KB Output is correct
52 Correct 216 ms 19904 KB Output is correct
53 Correct 255 ms 18580 KB Output is correct
54 Correct 161 ms 18508 KB Output is correct
55 Correct 25 ms 5972 KB Output is correct
56 Correct 18 ms 5784 KB Output is correct
57 Correct 156 ms 13980 KB Output is correct
58 Correct 59 ms 15872 KB Output is correct
59 Correct 274 ms 25492 KB Output is correct
60 Correct 810 ms 42388 KB Output is correct
61 Correct 265 ms 23220 KB Output is correct
62 Correct 283 ms 22996 KB Output is correct
63 Correct 327 ms 22972 KB Output is correct
64 Correct 1136 ms 28860 KB Output is correct
65 Correct 225 ms 23244 KB Output is correct
66 Correct 523 ms 35220 KB Output is correct
67 Correct 135 ms 25388 KB Output is correct
68 Correct 394 ms 27700 KB Output is correct
69 Correct 355 ms 27584 KB Output is correct
70 Correct 325 ms 26632 KB Output is correct