oj.uz

Submission #802307

# Submission time Handle Problem Language Result Execution time Memory
802307 2023-08-02T11:31:26 Z parsadox2 Village (BOI20_village) C++14
50 / 100
 92 ms 29768 KB 
#include <bits/stdc++.h>
#define int long long 
using namespace std;

const int maxn = 1e5 + 10;
int n , st[maxn] , fn[maxn] , dp[2][maxn] , par[2][maxn] , sz[maxn] , ar[maxn] , br[maxn];
vector <int> trav , adj[maxn] , child[maxn];

void dfs(int v , int p = -1)
{
	st[v] = trav.size();
	sz[v] = 1;
	trav.push_back(v);
	for(auto u : adj[v])  if(u != p)
	{
		dfs(u , v);
		sz[v] += sz[u];
	}
	fn[v] = trav.size();
}

bool cmp(int a , int b)
{
	return dp[1][a] - dp[0][a] < dp[1][b] - dp[0][b];
}

void solve(int v , int p = -1)
{
	bool leaf = true;
	int sum = 0;
	for(auto u : adj[v])  if(u != p)
	{
		leaf = false;
		solve(u , v);
		child[v].push_back(u);
		sum += dp[0][u];
	}
	if(leaf)
	{
		dp[1][v] = 0;
		dp[0][v] = maxn << 2;
		return;
	}
	sort(child[v].begin() , child[v].end() , cmp);
	//cout << v << " " << p << " : " << endl;
	//for(auto u : child[v])
	//	cout << u << " " << dp[0][u] << " " << dp[1][u] << endl;
	//cout << endl;
	int fsum = sum;
	dp[1][v] = sum;
	par[1][v] = 0;
	fsum += (dp[1][child[v][0]] - dp[0][child[v][0]]);
	for(int i = 1 ; i < child[v].size() ; i++)
	{
		int now = child[v][i];
		fsum += (dp[1][now] - dp[0][now]);
		if(fsum + 2 * (i + 1) < dp[1][v])
		{
			dp[1][v] = fsum + 2 * (i + 1);
			par[1][v] = i + 1;
		}
	}
	//cout << "SALAM" << endl;
	//cout << v << " " << p << endl;
	fsum = sum + dp[1][child[v][0]] - dp[0][child[v][0]];
	dp[0][v] = fsum + 2;
	par[0][v] = 1;
	for(int i = 1 ; i < child[v].size() ; i++)
	{
		//cout << i << endl;
		int now = child[v][i];
		fsum += (dp[1][now] - dp[0][now]);
		if(fsum + 2 * (i + 1) < dp[0][v])
		{
			dp[0][v] = fsum + 2 * (i + 1);
			par[0][v] = i + 1;
		}
	}
	//cout << v << " " << dp[0][v] << " " << dp[1][v] << endl;
}

void Build(int v , int ty)
{
	//cout << v << " " << ty << " " << child[v].size() << endl;
	if(child[v].size() == 0)
		return;
	for(int i = 0 ; i < par[ty][v] ; i++)
		Build(child[v][i] , 1);
	for(int i = par[ty][v] ; i < child[v].size() ; i++)
		Build(child[v][i] , 0);
	//cout << v << " " << ty << endl;
	for(int i = 0 ; i + 1 < par[ty][v] ; i++)
		ar[child[v][i]] = child[v][i + 1];
	if(ty == 1)
	{
		if(par[ty][v] != 0)
			ar[child[v][par[ty][v] - 1]] = child[v][0];		
	}
	else
	{
		ar[v] = child[v][0];
		ar[child[v][par[ty][v] - 1]] = v;
	}
}

signed main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	for(int i = 0 ; i < n - 1 ; i++)
	{
		int v , u;  cin >> v >> u;
		adj[v].push_back(u);
		adj[u].push_back(v);
	}
	dfs(1);
	//cout << "DFSED" << endl;
	solve(1);
	//cout << "SOLVED" << endl;
	Build(1 , 0);
	//cout << "BUILt" << endl;
	int lar = 0 , sma = dp[0][1];
	for(int i = 2 ; i <= n ; i++)
		lar += min(sz[i] , n - sz[i]) * 2;
	for(int i = 1 ; i <= n ; i++)
		br[i] = trav[(st[i] + (n / 2)) % n];
	cout << sma << " " << lar << endl;
	for(int i = 1 ; i <= n ; i++)
		cout << br[i] << " ";
	cout << endl;
	for(int i = 1 ; i <= n ; i++)
		cout << br[i] << " ";
	cout << endl;
	return 0;
}

Compilation message

Village.cpp: In function 'void solve(long long int, long long int)':
Village.cpp:53:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i = 1 ; i < child[v].size() ; i++)
      |                  ~~^~~~~~~~~~~~~~~~~
Village.cpp:68:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |  for(int i = 1 ; i < child[v].size() ; i++)
      |                  ~~^~~~~~~~~~~~~~~~~
Village.cpp: In function 'void Build(long long int, long long int)':
Village.cpp:89:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |  for(int i = par[ty][v] ; i < child[v].size() ; i++)
      |                           ~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 4948 KB Partially correct
2 Partially correct 2 ms 4948 KB Partially correct
3 Correct 2 ms 4948 KB Output is correct
4 Partially correct 2 ms 5024 KB Partially correct
5 Partially correct 3 ms 5024 KB Partially correct
6 Partially correct 3 ms 4948 KB Partially correct
7 Correct 2 ms 4960 KB Output is correct
8 Partially correct 3 ms 5024 KB Partially correct
9 Partially correct 2 ms 4948 KB Partially correct
10 Partially correct 2 ms 4948 KB Partially correct
11 Partially correct 2 ms 4948 KB Partially correct
12 Partially correct 3 ms 4948 KB Partially correct
13 Partially correct 2 ms 4948 KB Partially correct
14 Correct 3 ms 4948 KB Output is correct
15 Partially correct 3 ms 4948 KB Partially correct
16 Partially correct 2 ms 4948 KB Partially correct
17 Partially correct 2 ms 4948 KB Partially correct

Subtask #2
19.0 / 38.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 5076 KB Partially correct
2 Partially correct 3 ms 5076 KB Partially correct
3 Partially correct 2 ms 5076 KB Partially correct
4 Partially correct 3 ms 5076 KB Partially correct
5 Partially correct 3 ms 5076 KB Partially correct
6 Partially correct 3 ms 5076 KB Partially correct
7 Partially correct 2 ms 5204 KB Partially correct
8 Partially correct 3 ms 5204 KB Partially correct
9 Partially correct 3 ms 5204 KB Partially correct
10 Partially correct 3 ms 5204 KB Partially correct
11 Partially correct 3 ms 5204 KB Partially correct
12 Correct 3 ms 5076 KB Output is correct
13 Partially correct 2 ms 5076 KB Partially correct
14 Partially correct 3 ms 5204 KB Partially correct
15 Partially correct 3 ms 5076 KB Partially correct
16 Partially correct 3 ms 5076 KB Partially correct
17 Partially correct 4 ms 5076 KB Partially correct
18 Partially correct 2 ms 5076 KB Partially correct
19 Partially correct 3 ms 5076 KB Partially correct
20 Partially correct 2 ms 5076 KB Partially correct
21 Partially correct 3 ms 5204 KB Partially correct
22 Partially correct 3 ms 5076 KB Partially correct
23 Partially correct 3 ms 5076 KB Partially correct
24 Partially correct 3 ms 5188 KB Partially correct
25 Partially correct 2 ms 5076 KB Partially correct
26 Partially correct 3 ms 5076 KB Partially correct
27 Partially correct 2 ms 5076 KB Partially correct
28 Partially correct 3 ms 5204 KB Partially correct
29 Partially correct 3 ms 5204 KB Partially correct
30 Partially correct 3 ms 5076 KB Partially correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 4948 KB Partially correct
2 Partially correct 2 ms 4948 KB Partially correct
3 Correct 2 ms 4948 KB Output is correct
4 Partially correct 2 ms 5024 KB Partially correct
5 Partially correct 3 ms 5024 KB Partially correct
6 Partially correct 3 ms 4948 KB Partially correct
7 Correct 2 ms 4960 KB Output is correct
8 Partially correct 3 ms 5024 KB Partially correct
9 Partially correct 2 ms 4948 KB Partially correct
10 Partially correct 2 ms 4948 KB Partially correct
11 Partially correct 2 ms 4948 KB Partially correct
12 Partially correct 3 ms 4948 KB Partially correct
13 Partially correct 2 ms 4948 KB Partially correct
14 Correct 3 ms 4948 KB Output is correct
15 Partially correct 3 ms 4948 KB Partially correct
16 Partially correct 2 ms 4948 KB Partially correct
17 Partially correct 2 ms 4948 KB Partially correct
18 Partially correct 2 ms 5076 KB Partially correct
19 Partially correct 3 ms 5076 KB Partially correct
20 Partially correct 2 ms 5076 KB Partially correct
21 Partially correct 3 ms 5076 KB Partially correct
22 Partially correct 3 ms 5076 KB Partially correct
23 Partially correct 3 ms 5076 KB Partially correct
24 Partially correct 2 ms 5204 KB Partially correct
25 Partially correct 3 ms 5204 KB Partially correct
26 Partially correct 3 ms 5204 KB Partially correct
27 Partially correct 3 ms 5204 KB Partially correct
28 Partially correct 3 ms 5204 KB Partially correct
29 Correct 3 ms 5076 KB Output is correct
30 Partially correct 2 ms 5076 KB Partially correct
31 Partially correct 3 ms 5204 KB Partially correct
32 Partially correct 3 ms 5076 KB Partially correct
33 Partially correct 3 ms 5076 KB Partially correct
34 Partially correct 4 ms 5076 KB Partially correct
35 Partially correct 2 ms 5076 KB Partially correct
36 Partially correct 3 ms 5076 KB Partially correct
37 Partially correct 2 ms 5076 KB Partially correct
38 Partially correct 3 ms 5204 KB Partially correct
39 Partially correct 3 ms 5076 KB Partially correct
40 Partially correct 3 ms 5076 KB Partially correct
41 Partially correct 3 ms 5188 KB Partially correct
42 Partially correct 2 ms 5076 KB Partially correct
43 Partially correct 3 ms 5076 KB Partially correct
44 Partially correct 2 ms 5076 KB Partially correct
45 Partially correct 3 ms 5204 KB Partially correct
46 Partially correct 3 ms 5204 KB Partially correct
47 Partially correct 3 ms 5076 KB Partially correct
48 Partially correct 61 ms 18700 KB Partially correct
49 Partially correct 87 ms 20140 KB Partially correct
50 Partially correct 81 ms 20024 KB Partially correct
51 Partially correct 46 ms 16772 KB Partially correct
52 Partially correct 66 ms 19940 KB Partially correct
53 Partially correct 58 ms 18460 KB Partially correct
54 Partially correct 34 ms 17224 KB Partially correct
55 Partially correct 92 ms 29768 KB Partially correct
56 Partially correct 75 ms 24584 KB Partially correct
57 Partially correct 72 ms 22972 KB Partially correct
58 Partially correct 90 ms 21648 KB Partially correct
59 Partially correct 61 ms 20012 KB Partially correct
60 Correct 48 ms 17668 KB Output is correct
61 Partially correct 45 ms 18024 KB Partially correct
62 Partially correct 47 ms 18444 KB Partially correct
63 Partially correct 48 ms 17812 KB Partially correct
64 Partially correct 52 ms 19868 KB Partially correct
65 Partially correct 53 ms 19852 KB Partially correct
66 Partially correct 44 ms 18020 KB Partially correct
67 Partially correct 42 ms 14912 KB Partially correct
68 Partially correct 42 ms 17616 KB Partially correct
69 Partially correct 52 ms 19576 KB Partially correct
70 Partially correct 44 ms 18752 KB Partially correct
71 Partially correct 32 ms 15188 KB Partially correct
72 Partially correct 35 ms 16576 KB Partially correct
73 Partially correct 48 ms 19588 KB Partially correct
74 Partially correct 51 ms 18492 KB Partially correct
75 Partially correct 68 ms 19920 KB Partially correct
76 Partially correct 74 ms 19636 KB Partially correct
77 Partially correct 65 ms 19864 KB Partially correct
78 Partially correct 34 ms 15020 KB Partially correct
79 Partially correct 51 ms 16316 KB Partially correct
80 Partially correct 76 ms 19980 KB Partially correct
81 Partially correct 51 ms 19876 KB Partially correct
82 Partially correct 46 ms 19144 KB Partially correct