Submission #1176589

#	Time	Username	Problem	Language	Result	Execution time	Memory
1176589		Warinchai	Bosses (BOI16_bosses)	C++20	0 / 100	0 ms	324 KiB

bosses

#include<bits/stdc++.h>
#define int long long
using namespace std;
vector<int>adj[5005];
int vis[5005];
int ans[5005];
int cnt[5005];
void dfs(int u){
    cnt[u]=1;
    for(auto x:adj[u]){
        if(vis[x])continue;
        vis[x]=1;
        dfs(x);
        cnt[u]+=cnt[x];
        ans[u]+=ans[x];
    }
    ans[u]+=cnt[u];
}
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    for(int i=1;i<=n;i++){
        int t;cin>>t;
        for(int i=1;i<=t;i++){
            int x;cin>>x;
            adj[x].push_back(i);
        }
    }
    int rans=LLONG_MAX;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++)vis[j]=ans[j]=cnt[j]=0;
        vis[i]=1;
        dfs(i);
        if(cnt[i]==n)rans=min(rans,ans[i]);
    }
    cout<<rans;
}

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