Submission #1014336

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014336		aufan	Bosses (BOI16_bosses)	C++17	67 / 100	1541 ms	1360 KiB

bosses

#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second

using namespace std;

const int inff = 1e18;

int32_t main()
{
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int n;
        cin >> n;

        vector<vector<int>> v(n + 1);
        for (int i = 1; i <= n; i++) {
                int k;
                cin >> k;

                for (int j = 0; j < k; j++) {
                        int x;
                        cin >> x;

                        v[x].push_back(i);
                }
        }

        int ans = inff;
        for (int i = 1; i <= n; i++) {
                vector<int> d(n + 1, -1), q(1, i);
                vector<vector<int>> g(n + 1);
                d[i] = 0;
                for (int j = 0; j < (int)q.size(); j++) {
                        int x = q[j];

                        for (auto z : v[x]) {
                                if (d[z] == -1) {
                                        d[z] = d[x] + 1;
                                        g[x].push_back(z);
                                        q.push_back(z);
                                }
                        }
                }

                if ((int)q.size() < n) continue;

                int res = 0;
                vector<int> val(n + 1);
                for (int j = n - 1; j >= 0; j--) {
                        int x = q[j];

                        val[x] = 1;
                        for (auto z : g[x]) {
                                val[x] += val[z];
                        }

                        res += val[x];
                }

                ans = min(ans, res);
        }

        cout << ans << '\n';
        
        return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 45 / 45
• Subtask 3: 0 / 33