Submission #858043

#	Time	Username	Problem	Language	Result	Execution time	Memory
858043		vjudge1	Bosses (BOI16_bosses)	C++17	100 / 100	398 ms	860 KiB

bosses

//In His Name
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
typedef pair<long long, int> pli;
typedef pair<long long, long long> pll;
#define ll long long
#define int ll
#define F first
#define S second
#define pb push_back
#define bug(x) cout << "Ah shit , here we go again : " << x <<endl
#define all(x) x.begin() , x.end()
#define ceil(x,y) x/y + min(1,x%y);
const int maxn = 5000 + 15, MOD = 1e9 + 7;
const ll INF = 1e18;

int n , h[maxn] , ans = INF;
vector<int> adj[maxn];
bool mark[maxn];

void Bfs(int i){
    memset(mark , false , sizeof mark);
    queue<int> q;
    q.push(i);
    h[i] = 1;
    mark[i] = true;
    int sum = 1;
    while(!q.empty()){
        int v = q.front();
        q.pop();
        for(int u : adj[v]){
            if(!mark[u]){
                q.push(u);
                mark[u] = true;
                h[u] = h[v]+1;
                sum += h[u];
            }
        }
    }
    for(int j = 1 ; j <= n ; j++) if(!mark[j]) return;
    ans = min(sum , ans);
}

main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    cin >> n;
    for(int i = 1 ; i <= n ; i++){
        int j;
        cin >> j;
        for(int l = 1 ; l <= j ; l++){
            int x;
            cin >> x;
            adj[x].pb(i);
        }
    }
    for(int i = 1 ; i <= n ; i++) Bfs(i);
    cout << ans;

}

Compilation message (stderr)

bosses.cpp:48:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main(){
      | ^~~~

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