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Submission #207820

# Submission time Handle Problem Language Result Execution time Memory
207820 2020-03-09T07:12:08 Z bensonlzl Bosses (BOI16_bosses) C++14
100 / 100
 758 ms 888 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

ll N, K, X, dist[5005];
vector<ll> employ[5005];

ll bfs(int x){
	ll sum = 0;
	for (int i = 1; i <= N; ++i) dist[i] = 1e9;
	dist[x] = 0;
	queue<int> q;
	q.push(x);
	while (!q.empty()){
		int v = q.front();
		q.pop();
		for (auto it : employ[v]){
			if (dist[it] > dist[v] + 1){
				dist[it] = dist[v] + 1;
				q.push(it);
			}
		}
	}
	for (int i = 1; i <= N; ++i){
		sum += dist[i];
	}
	return sum + N;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cin >> N;
	for (int i = 1; i <= N; ++i){
		cin >> K;
		for (int j = 1; j <= K; ++j){
			cin >> X;
			employ[X].push_back(i);
		}
	}
	ll mini = 1e9;
	for (int i = 1; i <= N; ++i){
		mini = min(mini,bfs(i));
	}
	cout << mini << '\n';
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 508 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 508 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 508 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 9 ms 760 KB Output is correct
13 Correct 7 ms 636 KB Output is correct
14 Correct 158 ms 632 KB Output is correct
15 Correct 43 ms 636 KB Output is correct
16 Correct 602 ms 760 KB Output is correct
17 Correct 758 ms 888 KB Output is correct
18 Correct 749 ms 888 KB Output is correct