Submission #1074776

#	Time	Username	Problem	Language	Result	Execution time	Memory
1074776		Icelast	Bosses (BOI16_bosses)	C++17	67 / 100	1515 ms	856 KiB

bosses

#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
void solve(){
    int n;
    cin >> n;
    vector<int> a(n+1);
    vector<vector<int>> boss(n+1);
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        for(int j = 1; j <= a[i]; j++){
            int v;
            cin >> v;
            boss[i].push_back(v);
        }
    }
    vector<vector<int>> adj(n+1);
    vector<bool> latest(n+1, false);
    vector<bool> vis(n+1, false);
    vector<int> aval, left;
    vector<int> t;
    ll ans = INF;
    for(int root = 1; root <= n; root++){
        ll res = 0;
        ll left = n-1;
        for(int i = 1; i <= n; i++){
            latest[i] = false;
            vis[i] = false;
        }
        aval.clear();
        aval.push_back(root);
        latest[root] = true;
        vis[root] = true;
        for(int d = 1; d <= n; d++){
            if(aval.empty()) break;
            t.clear();
            res += d*aval.size();
            for(int i = 1; i <= n; i++){
                if(vis[i]) continue;
                for(int j : boss[i]){
                    if(latest[j]){
                        t.push_back(i);
                        break;
                    }
                }
            }
            for(int i = 1; i <= n; i++) latest[i] = false;
            for(int i : t){latest[i] = true; left--; vis[i] = true;}
            aval = t;
        }
        if(left > 0) res = INF;
        ans = min(ans, res);
    }
    cout << ans;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

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