oj.uz

Submission #896669

# Submission time Handle Problem Language Result Execution time Memory
896669 2024-01-01T20:39:22 Z aykhn Race (IOI11_race) C++17
100 / 100
 206 ms 37324 KB 
#include "race.h"
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
typedef long double ld;
 
#define pb push_back
#define ins insert
#define fi first
#define se second
#define mod (ll)(1e9 + 7)
#define mxn (ll)(2e5 + 5)
#define inf (ll)(0x3F3F3F3F)
 
int n, k;
vector<pii> adj[mxn];
int sz[mxn];
int used[mxn];
 
inline void getsize(int a, int p)
{
	sz[a] = 1;
	for (pii v : adj[a])
	{
		if (used[v.fi] || v.fi == p) continue;
		getsize(v.fi, a);
		sz[a] += sz[v.fi];
	}
}
 
inline int findcent(int a, int p, int &curn)
{
	for (pii v : adj[a])
	{
		if (used[v.fi] || v.fi == p) continue;
		if (sz[v.fi] > curn/2) return findcent(v.fi, a, curn);
	}
	return a;
}
vector<pii> arr;
pii mp[(int)(1e6 + 5)];
int res = inf;
int curc;
 
inline void init(int a, int p, int w, int w1)
{
	if (k - w >= 0 && mp[k - w].se == curc)
	{
		res = min(res, mp[k - w].fi + w1);
	}
	arr.pb({w, w1});
	for (pii v : adj[a])
	{
		if (used[v.fi] || v.fi == p) continue;
		init(v.fi, a, w + v.se, w1 + 1);
	}
}
 
inline void maincent(int a)
{
	getsize(a, a);
	int c = findcent(a, a, sz[a]);
	curc = c;
	mp[0] = {0, c};
	for (pii v : adj[c])
	{
		if (used[v.fi]) continue;
		arr.clear();
		init(v.fi, c, v.se, 1);
		for (pii x : arr)
		{
			if (x.fi > k) continue;
			if (mp[x.fi].se != curc) mp[x.fi] = {x.se, curc};
			else mp[x.fi].fi = min(mp[x.fi].fi, (int)x.se);
		}
	}
	used[c] = 1;
	for (pii v : adj[c])
	{
		if (used[v.fi]) continue;
		maincent(v.fi);
	}
 
}
 
int best_path(int N, int K, int H[][2], int L[])
{
	for (int i = 0; i < (int)(1e6 + 5); i++) mp[i] = {0, -1};
	n = N;
	k = K;
	for (int i = 0; i < n - 1; i++)
	{
		adj[H[i][0]].pb({H[i][1], L[i]});
		adj[H[i][1]].pb({H[i][0], L[i]});
	}
	maincent(0);
	return (res == inf ? -1 : res);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 18008 KB Output is correct
2 Correct 4 ms 18008 KB Output is correct
3 Correct 4 ms 18012 KB Output is correct
4 Correct 5 ms 18008 KB Output is correct
5 Correct 4 ms 18104 KB Output is correct
6 Correct 4 ms 18012 KB Output is correct
7 Correct 4 ms 18012 KB Output is correct
8 Correct 4 ms 18012 KB Output is correct
9 Correct 4 ms 18012 KB Output is correct
10 Correct 4 ms 18012 KB Output is correct
11 Correct 4 ms 18012 KB Output is correct
12 Correct 4 ms 18012 KB Output is correct
13 Correct 4 ms 18012 KB Output is correct
14 Correct 4 ms 18144 KB Output is correct
15 Correct 4 ms 18012 KB Output is correct
16 Correct 4 ms 18264 KB Output is correct
17 Correct 4 ms 18012 KB Output is correct
18 Correct 3 ms 18012 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 18008 KB Output is correct
2 Correct 4 ms 18008 KB Output is correct
3 Correct 4 ms 18012 KB Output is correct
4 Correct 5 ms 18008 KB Output is correct
5 Correct 4 ms 18104 KB Output is correct
6 Correct 4 ms 18012 KB Output is correct
7 Correct 4 ms 18012 KB Output is correct
8 Correct 4 ms 18012 KB Output is correct
9 Correct 4 ms 18012 KB Output is correct
10 Correct 4 ms 18012 KB Output is correct
11 Correct 4 ms 18012 KB Output is correct
12 Correct 4 ms 18012 KB Output is correct
13 Correct 4 ms 18012 KB Output is correct
14 Correct 4 ms 18144 KB Output is correct
15 Correct 4 ms 18012 KB Output is correct
16 Correct 4 ms 18264 KB Output is correct
17 Correct 4 ms 18012 KB Output is correct
18 Correct 3 ms 18012 KB Output is correct
19 Correct 4 ms 18012 KB Output is correct
20 Correct 4 ms 18012 KB Output is correct
21 Correct 4 ms 18012 KB Output is correct
22 Correct 4 ms 18264 KB Output is correct
23 Correct 4 ms 18008 KB Output is correct
24 Correct 4 ms 18008 KB Output is correct
25 Correct 5 ms 18012 KB Output is correct
26 Correct 4 ms 18012 KB Output is correct
27 Correct 4 ms 18012 KB Output is correct
28 Correct 4 ms 18012 KB Output is correct
29 Correct 4 ms 18012 KB Output is correct
30 Correct 5 ms 18148 KB Output is correct
31 Correct 4 ms 18012 KB Output is correct
32 Correct 4 ms 18012 KB Output is correct
33 Correct 4 ms 18008 KB Output is correct
34 Correct 5 ms 18012 KB Output is correct
35 Correct 4 ms 18012 KB Output is correct
36 Correct 4 ms 18008 KB Output is correct
37 Correct 4 ms 18012 KB Output is correct
38 Correct 4 ms 18012 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 18008 KB Output is correct
2 Correct 4 ms 18008 KB Output is correct
3 Correct 4 ms 18012 KB Output is correct
4 Correct 5 ms 18008 KB Output is correct
5 Correct 4 ms 18104 KB Output is correct
6 Correct 4 ms 18012 KB Output is correct
7 Correct 4 ms 18012 KB Output is correct
8 Correct 4 ms 18012 KB Output is correct
9 Correct 4 ms 18012 KB Output is correct
10 Correct 4 ms 18012 KB Output is correct
11 Correct 4 ms 18012 KB Output is correct
12 Correct 4 ms 18012 KB Output is correct
13 Correct 4 ms 18012 KB Output is correct
14 Correct 4 ms 18144 KB Output is correct
15 Correct 4 ms 18012 KB Output is correct
16 Correct 4 ms 18264 KB Output is correct
17 Correct 4 ms 18012 KB Output is correct
18 Correct 3 ms 18012 KB Output is correct
19 Correct 75 ms 25848 KB Output is correct
20 Correct 78 ms 25812 KB Output is correct
21 Correct 75 ms 25856 KB Output is correct
22 Correct 67 ms 26072 KB Output is correct
23 Correct 59 ms 26324 KB Output is correct
24 Correct 42 ms 25948 KB Output is correct
25 Correct 83 ms 27148 KB Output is correct
26 Correct 64 ms 28628 KB Output is correct
27 Correct 108 ms 30600 KB Output is correct
28 Correct 205 ms 37324 KB Output is correct
29 Correct 188 ms 36968 KB Output is correct
30 Correct 115 ms 30832 KB Output is correct
31 Correct 107 ms 30800 KB Output is correct
32 Correct 124 ms 30784 KB Output is correct
33 Correct 143 ms 30668 KB Output is correct
34 Correct 148 ms 31688 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 18008 KB Output is correct
2 Correct 4 ms 18008 KB Output is correct
3 Correct 4 ms 18012 KB Output is correct
4 Correct 5 ms 18008 KB Output is correct
5 Correct 4 ms 18104 KB Output is correct
6 Correct 4 ms 18012 KB Output is correct
7 Correct 4 ms 18012 KB Output is correct
8 Correct 4 ms 18012 KB Output is correct
9 Correct 4 ms 18012 KB Output is correct
10 Correct 4 ms 18012 KB Output is correct
11 Correct 4 ms 18012 KB Output is correct
12 Correct 4 ms 18012 KB Output is correct
13 Correct 4 ms 18012 KB Output is correct
14 Correct 4 ms 18144 KB Output is correct
15 Correct 4 ms 18012 KB Output is correct
16 Correct 4 ms 18264 KB Output is correct
17 Correct 4 ms 18012 KB Output is correct
18 Correct 3 ms 18012 KB Output is correct
19 Correct 4 ms 18012 KB Output is correct
20 Correct 4 ms 18012 KB Output is correct
21 Correct 4 ms 18012 KB Output is correct
22 Correct 4 ms 18264 KB Output is correct
23 Correct 4 ms 18008 KB Output is correct
24 Correct 4 ms 18008 KB Output is correct
25 Correct 5 ms 18012 KB Output is correct
26 Correct 4 ms 18012 KB Output is correct
27 Correct 4 ms 18012 KB Output is correct
28 Correct 4 ms 18012 KB Output is correct
29 Correct 4 ms 18012 KB Output is correct
30 Correct 5 ms 18148 KB Output is correct
31 Correct 4 ms 18012 KB Output is correct
32 Correct 4 ms 18012 KB Output is correct
33 Correct 4 ms 18008 KB Output is correct
34 Correct 5 ms 18012 KB Output is correct
35 Correct 4 ms 18012 KB Output is correct
36 Correct 4 ms 18008 KB Output is correct
37 Correct 4 ms 18012 KB Output is correct
38 Correct 4 ms 18012 KB Output is correct
39 Correct 75 ms 25848 KB Output is correct
40 Correct 78 ms 25812 KB Output is correct
41 Correct 75 ms 25856 KB Output is correct
42 Correct 67 ms 26072 KB Output is correct
43 Correct 59 ms 26324 KB Output is correct
44 Correct 42 ms 25948 KB Output is correct
45 Correct 83 ms 27148 KB Output is correct
46 Correct 64 ms 28628 KB Output is correct
47 Correct 108 ms 30600 KB Output is correct
48 Correct 205 ms 37324 KB Output is correct
49 Correct 188 ms 36968 KB Output is correct
50 Correct 115 ms 30832 KB Output is correct
51 Correct 107 ms 30800 KB Output is correct
52 Correct 124 ms 30784 KB Output is correct
53 Correct 143 ms 30668 KB Output is correct
54 Correct 148 ms 31688 KB Output is correct
55 Correct 8 ms 18776 KB Output is correct
56 Correct 9 ms 18800 KB Output is correct
57 Correct 52 ms 26084 KB Output is correct
58 Correct 28 ms 25348 KB Output is correct
59 Correct 64 ms 28776 KB Output is correct
60 Correct 198 ms 36928 KB Output is correct
61 Correct 106 ms 30992 KB Output is correct
62 Correct 122 ms 30920 KB Output is correct
63 Correct 123 ms 30800 KB Output is correct
64 Correct 197 ms 32144 KB Output is correct
65 Correct 179 ms 32836 KB Output is correct
66 Correct 206 ms 36044 KB Output is correct
67 Correct 70 ms 31540 KB Output is correct
68 Correct 141 ms 32712 KB Output is correct
69 Correct 138 ms 32864 KB Output is correct
70 Correct 149 ms 32200 KB Output is correct