oj.uz

답안 #877474

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
877474 2023-11-23T09:12:42 Z Beerus13 Bosses (BOI16_bosses) C++14
0 / 100
 0 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 5e3 + 5;
int n;
vector<int> g[N];
int dp[N];

int bfs(int u) {
    queue<int> q;
    memset(dp, 0x3f, sizeof(dp));
    dp[u] = 1;
    q.emplace(u);
    while(q.size()) {
        int s = q.front(); q.pop();
        for(int t : g[s]) if(dp[t] > dp[s] + 1) {
            dp[t] = dp[s] + 1;
            q.emplace(t);
        }
    }
    int res = 0;
    for(int i = 1; i <= n; ++i) res += dp[i];
    return res;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; ++i) {
        int k, x; cin >> k;
        while(k--) {
            cin >> x;
            g[x].push_back(i);
        }
    }
    int ans = 1e9;
    for(int i = 1; i <= n; ++i) ans = min(ans, bfs(i));
    cout << ans << '\n';
    return 0;
}

Subtask #1
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -