Submission #362402

#	Time	Username	Problem	Language	Result	Execution time	Memory
362402		gratus907	Bosses (BOI16_bosses)	C++17	100 / 100	691 ms	840 KiB

bosses

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#define ll long long
#define eps 1e-7
#define all(x) ((x).begin()),((x).end())
#define usecppio ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
using pii = pair<int, int>;

int n;
vector <int> G[5050];
int vst[5050];
int32_t main()
{
    usecppio
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        int k; cin >> k;
        for (int j = 0; j < k; j++)
        {
            int p; cin >> p;
            G[p].push_back(i);
        }
    }
    int ans = INT_MAX;
    for (int i = 1; i <= n; i++)
    {
        memset(vst, 0x7f, sizeof(vst));
        int cnt = 0;
        queue <int> q;
        q.push(i);
        cnt++;
        vst[i] = 1;
        while (!q.empty())
        {
            int t = q.front();
            q.pop();
            for (int nxt : G[t])
            {
                if (vst[nxt] > 10000)
                {
                    vst[nxt] = vst[t] + 1;
                    q.push(nxt);
                    cnt++;
                }
            }
        }
        if (cnt == n)
        {
            int sal = 0;
            for (int j = 1; j <= n; j++)
                sal += vst[j];
            ans = min(sal, ans);
        }
    }
    cout << ans << '\n';
}

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