Submission #330270

#	Time	Username	Problem	Language	Result	Execution time	Memory
330270		Ruba_K	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	492 KiB

bosses

#include<bits/stdc++.h>

using namespace std;

#define debug(x) cout << '[' << #x << " is: " << x << "] " << endl;
#define imod(a , n) (a % n + n ) % n

#define fastio ios_base::sync_with_stdio(false);cin.tie(0);
#define inF freopen("file.txt","r",stdin );
#define outF freopen("perimeter.out" , "w" , stdout ) ;
#define sor(v) sort(v.begin() , v.end());
#define print(v) for(auto f : v ) cout << f << " " ;
#define rsor(v) sort(v.rbegin() , v.rend());
#define rev(v) reverse(v.begin() , v.end());

#define ll long long
//#define int ll
#define pii pair<int , int >
const int N = 5e3 + 5 , M = N * 4 ;
const ll MOD = 1e9 + 7 , oo = 1e9 , OO = 1e18 ;

//37


int di[] = {1 , -1 , 0 , 0};
int dj[] = {0 , 0 , 1 , -1};


int n ;
stack<int>all ;
vector<vector<int> > sz ;
vector<int> adj[N];
int arr[N] , vis[N] , vid;

void bfs(int p){

    vis[p] = vid ;

    queue<int>q ;

    q.push(p);


    while(q.size()){
        int fr = q.front();
        q.pop();

        all.push(fr);

        for(auto f : adj[fr]){
            if(vis[f] == vid)
                continue ;
            q.push(f);
            vis[f] = vid ;

            sz[fr].push_back(f);

        }
    }



}
int32_t main()
{   //  inF;
    // inF;outF;
    fastio;
    // Dont Forget memset

   cin >> n ;


   for(int i = 1 ; i <= n ; i ++){
    int k ;
    cin >> k;

    while(k--){
        int a ;
        cin >> a;
        adj[a].push_back(i);

    }
   }

    int mn = oo ;


    for(int i = 1; i <= n ; i ++){
        vid ++ ;
        sz.clear();
        sz.resize(n + 1);

        memset(arr , 0 , sizeof arr);
        bfs(i);

        int sum = 0 ;

        while(all.size()){

            int tp = all.top();
            all.pop();

            int c = 0;
            for(auto f : sz[tp]){
                c += arr[f];

            }
            arr[tp] = c + 1 ;
            sum += (c + 1);
        }
        mn = min(mn , sum);

    }
    cout << mn ;
}

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