oj.uz

답안 #898783

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
898783 2024-01-05T06:04:03 Z Muhammad_Aneeq 경주 (Race) (IOI11_race) C++17
100 / 100
 617 ms 42948 KB 
#include <vector>
#include <set>
#include <map>
#include "race.h"
using namespace std;
int const MAXN=2e5+10;
vector<pair<int,int>>nei[MAXN]={};
int reqval=0,ans=1e9+10;
bool dead[MAXN]={};
int sz[MAXN]={};
int h[MAXN]={};
void dfs(int n,int m=-1)
{
	sz[n]=1;
	for (auto [i,we]:nei[n])
	{
		if (!dead[i]&&i!=m)
		{
			dfs(i,n);
			sz[n]+=sz[i];
		}
	}
}
int find_centroid(int n,int m,int root)
{
	for (auto [i,we]:nei[n])
	{
		if (!dead[i]&&i!=m&&sz[i]*2>sz[root])
			return find_centroid(i,n,root);
	}
	return n;
}
map<int,int>f;
vector<pair<int,int>>cur;
void dfs1(int n,int m,int val)
{
	cur.push_back({val,h[n]});
	if (val>reqval)
		return;
	if (f.find(reqval-val)!=f.end())
		ans=min(ans,h[n]+f[reqval-val]);
	for (auto [i,we]:nei[n])
	{
		if (!dead[i]&&i!=m)
		{
			h[i]=h[n]+1;
			dfs1(i,n,val+we);
		}
	}
}
void sol(int n)
{
	dfs(n);
	if (sz[n]==1)
		return;
	n=find_centroid(n,-1,n);
	dead[n]=1;
	cur={};
	f.clear();
	f[0]=0;
	for (auto [i,we]:nei[n])
	{
		if (!dead[i])
		{
			h[i]=1;
			dfs1(i,-1,we);
			for (auto [j,w]:cur)
			{
				if (f.find(j)==f.end())
					f[j]=w;
				else
					f[j]=min(f[j],w);
			}
			cur={};
		}
	}
	for (auto [i,we]:nei[n])
	{
		if (!dead[i])
			sol(i);
	}
}
int best_path(int n, int K, int H[][2], int L[])
{
	reqval=K;
	for (int i=0;i<n-1;i++)
	{
		int u=H[i][0],v=H[i][1];
		nei[u].push_back({v,L[i]});
		nei[v].push_back({u,L[i]});
	}
	sol(0);
	ans=(ans==1e9+10?-1:ans);
	return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9564 KB Output is correct
8 Correct 2 ms 9676 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9672 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 2 ms 9564 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9564 KB Output is correct
8 Correct 2 ms 9676 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9672 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 2 ms 9564 KB Output is correct
19 Correct 2 ms 9564 KB Output is correct
20 Correct 2 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 3 ms 9784 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 3 ms 9564 KB Output is correct
29 Correct 3 ms 9564 KB Output is correct
30 Correct 4 ms 9564 KB Output is correct
31 Correct 3 ms 9564 KB Output is correct
32 Correct 3 ms 9644 KB Output is correct
33 Correct 4 ms 9560 KB Output is correct
34 Correct 2 ms 9560 KB Output is correct
35 Correct 2 ms 9564 KB Output is correct
36 Correct 3 ms 9756 KB Output is correct
37 Correct 3 ms 9784 KB Output is correct
38 Correct 3 ms 9564 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9564 KB Output is correct
8 Correct 2 ms 9676 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9672 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 2 ms 9564 KB Output is correct
19 Correct 129 ms 14168 KB Output is correct
20 Correct 130 ms 13904 KB Output is correct
21 Correct 137 ms 14044 KB Output is correct
22 Correct 120 ms 14292 KB Output is correct
23 Correct 61 ms 13968 KB Output is correct
24 Correct 64 ms 13904 KB Output is correct
25 Correct 91 ms 17244 KB Output is correct
26 Correct 79 ms 21464 KB Output is correct
27 Correct 121 ms 20120 KB Output is correct
28 Correct 171 ms 34152 KB Output is correct
29 Correct 166 ms 33108 KB Output is correct
30 Correct 128 ms 20076 KB Output is correct
31 Correct 120 ms 20048 KB Output is correct
32 Correct 185 ms 20096 KB Output is correct
33 Correct 165 ms 18772 KB Output is correct
34 Correct 113 ms 18772 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 2 ms 9564 KB Output is correct
8 Correct 2 ms 9676 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 2 ms 9672 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9564 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 2 ms 9564 KB Output is correct
17 Correct 2 ms 9564 KB Output is correct
18 Correct 2 ms 9564 KB Output is correct
19 Correct 2 ms 9564 KB Output is correct
20 Correct 2 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9564 KB Output is correct
24 Correct 2 ms 9564 KB Output is correct
25 Correct 3 ms 9784 KB Output is correct
26 Correct 2 ms 9564 KB Output is correct
27 Correct 2 ms 9564 KB Output is correct
28 Correct 3 ms 9564 KB Output is correct
29 Correct 3 ms 9564 KB Output is correct
30 Correct 4 ms 9564 KB Output is correct
31 Correct 3 ms 9564 KB Output is correct
32 Correct 3 ms 9644 KB Output is correct
33 Correct 4 ms 9560 KB Output is correct
34 Correct 2 ms 9560 KB Output is correct
35 Correct 2 ms 9564 KB Output is correct
36 Correct 3 ms 9756 KB Output is correct
37 Correct 3 ms 9784 KB Output is correct
38 Correct 3 ms 9564 KB Output is correct
39 Correct 129 ms 14168 KB Output is correct
40 Correct 130 ms 13904 KB Output is correct
41 Correct 137 ms 14044 KB Output is correct
42 Correct 120 ms 14292 KB Output is correct
43 Correct 61 ms 13968 KB Output is correct
44 Correct 64 ms 13904 KB Output is correct
45 Correct 91 ms 17244 KB Output is correct
46 Correct 79 ms 21464 KB Output is correct
47 Correct 121 ms 20120 KB Output is correct
48 Correct 171 ms 34152 KB Output is correct
49 Correct 166 ms 33108 KB Output is correct
50 Correct 128 ms 20076 KB Output is correct
51 Correct 120 ms 20048 KB Output is correct
52 Correct 185 ms 20096 KB Output is correct
53 Correct 165 ms 18772 KB Output is correct
54 Correct 113 ms 18772 KB Output is correct
55 Correct 15 ms 10268 KB Output is correct
56 Correct 11 ms 10076 KB Output is correct
57 Correct 105 ms 14604 KB Output is correct
58 Correct 32 ms 13768 KB Output is correct
59 Correct 222 ms 24684 KB Output is correct
60 Correct 617 ms 42948 KB Output is correct
61 Correct 167 ms 20060 KB Output is correct
62 Correct 186 ms 20152 KB Output is correct
63 Correct 234 ms 20088 KB Output is correct
64 Correct 611 ms 24940 KB Output is correct
65 Correct 127 ms 20100 KB Output is correct
66 Correct 422 ms 30684 KB Output is correct
67 Correct 78 ms 20256 KB Output is correct
68 Correct 297 ms 24376 KB Output is correct
69 Correct 279 ms 24260 KB Output is correct
70 Correct 259 ms 24056 KB Output is correct