Submission #509451

#	Time	Username	Problem	Language	Result	Execution time	Memory
509451		ac2hu	Bosses (BOI16_bosses)	C++14	0 / 100	0 ms	332 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
#define int long long 
const int N = 5e3 + 10;
int n;
vector<int> adj[N];
int visited[N];
int lev[N];
int dfs(int i){
    if(!visited[i]){
        int ans = 0;
        vector<int> temp;
        visited[i] = true;
        for(int e : adj[i]){
            // cout << 'd' << " " << e << "\n";
            if(!visited[e]){
                temp.push_back(e);
                ans += dfs(e);
            }
        }
        // cout << i << "=>> ";
        // for(int e : temp)
        //     cout << e << " ";
        // cout << "\n";
        lev[i] = ans + 1;
        return lev[i];
    }
    return 0;
}
signed main(){
    iostream::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    cin >> n;
    for(int i = 0;i<n;i++){
        int c;cin >> c;
        for(int j = 0;j<c;j++){
            int temp;cin >> temp;
            temp --;
            adj[i].push_back(temp);
        }
    }
    int ans = 1e18;
    for(int i = 0;i<n;i++){
        // This will the root of the tree
        for(int i = 0;i<n;i++){
            visited[i] =false;
            lev[i] = -1;
        } 
        dfs(i);
        int temp = 0;
        for(int i = 0;i<n;i++){
            // cout << lev[i] << " ";
            temp += lev[i];
            if(!visited[i]){
                // cout << i << "\n";
                goto next;
            }
        }
        // cout << "\n";
        ans = min(ans,temp);
        next:
        continue;
    } 
    cout << ans << "\n";
}

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