Submission #531822

#	Time	Username	Problem	Language	Result	Execution time	Memory
531822		devariaota	Bosses (BOI16_bosses)	C++17	100 / 100	621 ms	636 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long ul;
typedef double dbl;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef map<ll, ll> mll;
typedef pair<string, ll> psl;
typedef map<string, ll> msl;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef deque<ll> deq;
typedef priority_queue<ll, vector<ll>, greater<ll>> pqm;
typedef priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> dij;
typedef priority_queue<ll> pq;
typedef string str;
const ll mod=1e9+7;
const ll maxn=5e3+1;
ll gcd(ll a, ll b) {
    return a==0 ? b : gcd(a, b%a);
}
ll lcm(ll a, ll b) {
    ll ans=a*b;
    ans=ans/(gcd(a, b));
    return ans;
}
#define ihacoy ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define dh << endl;
#define co cout <<
#define udh cout << endl;
#define spa << " ";
#define ci cin >>
#define fi first
#define se second
#define sp << " " <<
#define tes while(t--)
#define pb push_back
#define pf push_front
#define pob pop_back()
#define pof pop_front()
#define gre greater<ll>()
#define sip return 0
#define ub upper_bound
#define lb lower_bound
#define bs binary_search
int n, k, x, mini=1e9, fr;
queue<int> qu;
vi adj[maxn];
int main() {
    ihacoy
    ci n;
    for(int i=1; i<=n; i++) {
        ci k;
        for(int j=0; j<k; j++) {
            ci x;
            adj[x].pb(i);
        }
    }
    for(int i=1; i<=n; i++) {
        if(adj[i].empty()) continue;
        vector<bool> vis(n+1);
        qu.push(i);
        vis[i]=1;;
        int node=0, cnt=1, ans=n;
        while(!qu.empty()) {
            fr=qu.front();
            qu.pop();
            node++;
            for(auto it : adj[fr]) {
                if(!vis[it]) {
                    vis[it]=1;
                    qu.push(it);
                }
            }
            cnt--;
            if(cnt==0) {
                ans+=(n-node);
                cnt=(int)qu.size();
            }
        }
        if(node==n) {
            mini=min(mini, ans);
        }
    }
    co mini;
}

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