제출 #1299388

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1299388		flo	Village (BOI20_village)	C++20	12 / 100	28 ms	12100 KiB

Village

#include <bits/stdc++.h>
#define task "testing"
#define ll long long
#define multitest 0
using namespace std;

const int N = 1e5;

const ll inf = 1e18;

int n;

vector<int> adj[N+5];

namespace sub1 {
	const int sN = 10;
	
	int ds[sN+5][sN+5], id[N+5], ans[2][N+5];
	
	bool check() {
		return n <= sN;
	}
	
	void dfs(int st, int v, int par) {
		for (auto u : adj[v]) {
			if (u == par) continue;
			
			ds[st][u] = ds[st][v]+1;
			
			dfs(st, u, v);
		}
	}
	
	void solve() {
		for (int x = 1; x <= n; x++) dfs(x, x, x);
		
		ll mn = inf, mx = -inf;
		
		for (int x = 1; x <= n; x++) id[x] = x;
		
		do {
			ll cur = 0;
			
			for (int x = 1; x <= n; x++) {
				if (x == id[x]) {
					cur = -1;
					
					break;
				}
				
				cur += ds[x][id[x]];
			}
			
			if (cur == -1) continue;
			
			if (cur < mn) {
				mn = cur;
				
				for (int x = 1; x <= n; x++) {
					ans[0][x] = id[x];
				}
			}
			if (cur > mx) {
				mx = cur;
				
				for (int x = 1; x <= n; x++) {
					ans[1][x] = id[x];
				}
			}
			
		} while (next_permutation(id+1, id+n+1));
		
		cout << mn << " " << mx << "\n";
		
		for (int tp = 0; tp < 2; tp++) {
			for (int x = 1; x <= n; x++) {
				cout << ans[tp][x] << " ";
			}
			
			cout << "\n";
		}
	}
}

void flo(int ID) {
	cin >> n;
	
	for (int x = 1; x < n; x++) {
		int u, v; cin >> u >> v;
		
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	
	if (sub1::check()) sub1::solve();
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	if (fopen(task".inp", "r")) {
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}

	int TCS = 1, ID = 1;

	if (multitest) {
		cin >> TCS;
	}

	while (TCS--) flo(ID++);

	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Village.cpp: In function 'int main()':
Village.cpp:103:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  103 |                 freopen(task".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Village.cpp:104:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |                 freopen(task".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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