Submission #1020248

#	Time	Username	Problem	Language	Result	Execution time	Memory
1020248		ali2241	Village (BOI20_village)	C++17	12 / 100	74 ms	3664 KiB

Village

#include <bits/stdc++.h>
//ali2241

using namespace std;
#define int long long
//using ll = __int128;
using ld = long double;
const int M = 10589;
const int N = 1001;

vector<int> adj[N];
int dis[N][N];
int get (int a, int b, int c = -1) {
	if (a == b) {
		return 0;
	}
	int ans = -1e9;

    for (int i : adj[a]) {
		if (i != c)
		ans = max(ans, get(i, b, a));
	}
	return ans + 1;
}
int fact(int n) {
	if (n == 0)
	return 1;
	return n * fact(n - 1);
}
void fun() {
    int n;
    cin >> n;
    for (int i = 0; i < n - 1; ++i) {
    	int a, b;
    	cin >> a >> b;
    	adj[a].push_back(b);
    	adj[b].push_back(a);
	}
	pair<int, vector<int>> mn = {1e9, {}};
	pair<int, vector<int>> mx = {-1e9, {}};
	vector<int> per;
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= n; ++j) {
			dis[i][j] = get(i, j);
		}
	}
	for (int i = 1; i <= n; ++i) {
		per.push_back(i);
	}
	for (int i = 0; i < fact(n); ++i) {
		int ths = 0;
		bool b = 0;
		for (int i = 0; i < n; ++i) {
			if (i + 1 == per[i]) {
				b = 1;
				continue;
			}
			ths += dis[i + 1][per[i]];
		}
		if (ths < mn.first and !b) {
			mn = {ths, per};
		}
		if (ths > mx.first and !b) {
			mx = {ths, per};
		}
		next_permutation(per.begin(), per.end());
	}
	cout << mn.first << " " << mx.first << "\n";
	for (int i = 0; i < n; ++i) {
		cout << mn.second[i] << " ";
	}
	cout << "\n";
	for (int i = 0; i < n; ++i) {
		cout << mx.second[i] << " ";
	}
}

int32_t main() {
//    freopen("output.txt", "w", stdout);
//    freopen("input.txt", "r", stdin);
    ios::sync_with_stdio(0);
    int tc = 1;
    while (tc--)
        fun();
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 38
• Subtask 3: 0 / 50