oj.uz

답안 #79522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
79522 2018-10-15T01:30:07 Z combi1k1 Bosses (BOI16_bosses) C++14
67 / 100
 1500 ms 1120 KB 
#include<bits/stdc++.h>

using namespace std;

#define int long long
#define X   first
#define Y   second

const int   N   = 5e3 + 1;

vector<int> g[N];
int n, p[N];
int nCh[N];
bool vis[N];

signed main()   {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	
	cin >> n;
	
	for(int i = 1 ; i <= n ; ++i)   {
		int s;  cin >> s;
		while(s--)  {
			int x;  cin >> x;
			g[x].push_back(i);
		}
	}
	
	int ans = 1e18;
	
	for(int i = 1 ; i <= n ; ++i)   {
		memset(vis,0,sizeof vis);
		memset(p,0,sizeof p);
		queue<int>  q;  q.push(i);
		vis[i] = 1;
		while(q.size()) {
			int u = q.front();  q.pop();
			for(int v : g[u])
				if(!vis[v]) {
					p[v] = u;
					q.push(v);
					vis[v] = 1;
				}
		}
		
		bool ch = 1;
		for(int j = 1 ; j <= n ; ++j)   ch &= vis[j];
		if (!ch)    continue;
		
		int cur = 0;
		
		function<void(int)> dfs = [&](int u)    {
			nCh[u] = 1;
			for(int v : g[u])
				if (p[v] == u)  {
					dfs(v);
					nCh[u] += nCh[v];
				}
			cur += nCh[u];
		};  dfs(i);
		
		ans = min(ans,cur);
	}
	
	cout << ans << endl;
}

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 568 KB Output is correct
4 Correct 2 ms 772 KB Output is correct
5 Correct 2 ms 804 KB Output is correct
6 Correct 2 ms 804 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 568 KB Output is correct
4 Correct 2 ms 772 KB Output is correct
5 Correct 2 ms 804 KB Output is correct
6 Correct 2 ms 804 KB Output is correct
7 Correct 3 ms 804 KB Output is correct
8 Correct 2 ms 804 KB Output is correct
9 Correct 2 ms 804 KB Output is correct
10 Correct 3 ms 804 KB Output is correct
11 Correct 3 ms 804 KB Output is correct

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 568 KB Output is correct
4 Correct 2 ms 772 KB Output is correct
5 Correct 2 ms 804 KB Output is correct
6 Correct 2 ms 804 KB Output is correct
7 Correct 3 ms 804 KB Output is correct
8 Correct 2 ms 804 KB Output is correct
9 Correct 2 ms 804 KB Output is correct
10 Correct 3 ms 804 KB Output is correct
11 Correct 3 ms 804 KB Output is correct
12 Correct 11 ms 864 KB Output is correct
13 Correct 12 ms 864 KB Output is correct
14 Correct 188 ms 1120 KB Output is correct
15 Correct 37 ms 1120 KB Output is correct
16 Correct 764 ms 1120 KB Output is correct
17 Execution timed out 1567 ms 1120 KB Time limit exceeded
18 Halted 0 ms 0 KB -