Submission #139905

#	Time	Username	Problem	Language	Result	Execution time	Memory
139905		2fat2code	Bosses (BOI16_bosses)	C++14	100 / 100	1107 ms	852 KiB

bosses

#include <bits/stdc++.h>
#define ll long long
#define all(a) (a).begin(), (a).end()
//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define sz() size()
#define fr first
#define sc second
#define pb push_back
#define er erase
#define in insert
#define pi pair<int,int>
#define pii pair<pair<int,int>,int>
#define mp make_pair
//#define int long long
#define rc(s) return cout<<s,0
#define rcc(s) cout<<s,exit(0)
//#define cin fin
//#define cout fout
using namespace std;

//ifstream fin("file.in");
//ofstream fout("file.out");

const int nmax=1e3+5;
const int mod=1e9+7;
const int mod1=998244353;

int n,t,x,ans=1e9,dp[5005];
bitset<5005>viz;
vector<int>cop[5005],nod[5005];

int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin	>> n;
    for(int i=1;i<=n;i++){
        cin >> t;
        for(int j=1;j<=t;j++){
            cin >> x;
            cop[x].push_back(i);
        }
    }
    for(int i=1;i<=n;i++){
        viz.reset();
        queue<int>q;
        q.push(i);
        viz[i]=1;
        dp[i]=1;
        int cnt=1;
        while(!q.empty()){
            x=q.front();
            for(auto it:cop[x]){
                if(!viz[it]){
                    cnt++;
                    viz[it]=1;
                    q.push(it);
                    dp[it]=dp[x]+1;
                }
            }
            q.pop();
        }
        if(cnt!=n) continue;
        int rs=0;
        for(int j=1;j<=n;j++){
            rs+=dp[j];
        }
        ans=min(ans,rs);
    }
    rc(ans);
}

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