제출 #958395

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
958395		vjudge1	Bosses (BOI16_bosses)	C++17	0 / 100	1 ms	348 KiB

bosses

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>

const int N = 5069;
const ll mod = 1e9 + 7;

int tc;
int n, sub[N], cn, tot;
bool vis[N];
vector<int> al[N];

void dfs(int x)
{
    ++cn;
    sub[x] = 1;
    vis[x] = 1;
    for(auto z : al[x])
    {
        if(vis[z]) continue;
        dfs(z);
        sub[x] += sub[z];
    }
    tot += sub[x];
}

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int i, j;

    cin >> n;
    for(i = 1; i <= n; i++)
    {
        int k;
        cin >> k;
        for(j = 1; j <= k; j++)
        {
            int x;
            cin >> x;
            al[x].push_back(i);
        }
    }
    
    int ans = 1e9;
    for(i = 1; i <= n; i++)
    {
        cn = tot = 0;
        for(j = 1; j <= n; j++)
        {
            sub[j] = 0;
            vis[j] = 0;
        }
        dfs(i);
        if(cn == n) ans = min(ans, tot);
    }
    cout << ans << '\n';
}

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