제출 #239222

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
239222		aggu_01000101	Bosses (BOI16_bosses)	C++14	0 / 100	5 ms	384 KiB

bosses

#include <bits/stdc++.h>
#define int long long
#define INF 1000000000000000
#define lchild(i) (i*2 + 1)
#define rchild(i) (i*2 + 2)
#define mid(l, u) ((l+u)/2)
#define x(p) p.first
#define y(p) p.second
#define MOD 998244353
using namespace std;
int cost = 0;
int calcost(int i, int par, vector<int> adj[]){
    int sum = 0;
    for(int j: adj[i]){
        if(j==par) continue;
        sum+=calcost(j, i, adj);
    }
    //cout<<"node "<<i<<" value "<<(sum+1)<<"\n";
    cost += (sum + 1);
    return (sum + 1);
}
signed main(){
    int n;
    cin>>n;
    vector<int> children[n+1];
    for(int i =0 ;i<n;i++){
        int k;
        cin>>k;
        for(int j =0 ;j<k;j++){
            int par;
            cin>>par;
            children[par].push_back(i+1);
        }
    }
    int ans = INF;
    for(int i = 1;i<=n;i++){
        vector<int> adj[n+1];
        bool chosen[n+1];
        for(int j = 0;j<=n;j++) chosen[j] = false;
        chosen[i] = true;
        queue<int> q;
        q.push(i);
        while(!q.empty()){
            int curr = q.front();
            q.pop();
            for(int j: children[curr]){
                if(!chosen[j]){
                    //cout<<curr<<" is parent of "<<j<<"\n";
                    chosen[j] = true;
                    q.push(j);
                    adj[curr].push_back(j);
                }
            }
        }
        bool nc = false;
        for(int j = 1;j<=n;j++) if(!chosen[j]) nc = true;
        if(nc) continue;
        cost = 0;
        calcost(i, -1, adj);
        //cout<<i<<" "<<cost<<"\n";
        ans = min(ans, cost);
    }
    cout<<cost<<"\n";
}

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