Submission #239231

#	Time	Username	Problem	Language	Result	Execution time	Memory
239231		aggu_01000101	Bosses (BOI16_bosses)	C++14	100 / 100	820 ms	728 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;
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n;
    cin>>n;
    vector<int> children[n];
    for(int i =0 ;i<n;i++){
        int k;
        cin>>k;
        while(k--){
            int par;
            cin>>par;
            children[par-1].push_back(i);
        }
    }
    int ans = INF;
    for(int i = 0;i<n;i++){
        bool chosen[n];
        for(int j = 0;j<n;j++) chosen[j] = false;
        chosen[i] = true;
        queue<pair<int, int>> q;
        q.push({i, 0});
        int cnt = 1;
        int cost = 0;
        while(!q.empty()){
            pair<int, int> curr = q.front();
            cost+=(curr.second + 1);
            q.pop();
            for(int j: children[curr.first]){
                if(chosen[j]) continue;
                cnt++;
                chosen[j] = true;
                q.push({j, curr.second+1});
            }
        }
        if(cnt!=n) continue;
        ans = min(ans, cost);
    }
    cout<<ans<<"\n";
}

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