제출 #1172452

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1172452		nguyenkhangninh99	Bosses (BOI16_bosses)	C++17	100 / 100	425 ms	780 KiB

bosses

#include<bits/stdc++.h>
using namespace std;

#define int long long

const int maxn = 5e3 + 5;

vector<int> adj[maxn];

signed main(){
    ios_base::sync_with_stdio(false); 
    cin.tie(0); cout.tie(0);
    
    int n; cin >> n;
    for(int i = 1; i <= n; i++){
        int sz; cin >> sz;
        for (int j = 1; j <= sz; j++) {
            int k; cin >> k;
            adj[k].push_back(i);
        }
    }

    int res = 1e9;
    for(int i = 1; i <= n; i++){
        vector<int> d(n + 1, 1e9);
        d[i] = 0;
        queue<int> q;
        q.push(i);
        while(!q.empty()){
            int u = q.front();
            q.pop();
            for(int v: adj[u]){
                if(d[v] == 1e9){
                    d[v] = d[u] + 1;
                    q.push(v);
                }
            }
        }    
        res = min(res, accumulate(d.begin() + 1, d.end(), 0LL) + n);
    } 

    cout << res;
}

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