Submission #509364

#	Time	Username	Problem	Language	Result	Execution time	Memory
509364		sumit_kk10	Bosses (BOI16_bosses)	C++17	0 / 100	16 ms	31600 KiB

bosses

#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL) 
#define ll long long
#define pb push_back
#define F first 
#define S second
using namespace std;
const int N = 1e6 + 5, MOD = 1e9 + 7;
int n, sum = 0;
vector<int> g[N], vis(N), dis(N);

void solve(){
	cin >> n;
	for(int i = 1; i <= n; ++i){
		int x;
		cin >> x;
		for(int j = 0; j < x; ++j){
			int k;
			cin >> k;
			g[k].pb(i);
		}
	}
	long long ans = INT_MAX;
	for(int root = 1; root <= n; ++root){
		for(int j = 1; j <= n; ++j) vis[j] = 0;
		queue<pair<int, int> > q;
		int mx = 1;
		q.push({root, 1});
		dis[root] = 1;
		vis[root] = true;
		while(!q.empty()){
			int node = q.front().F, cost = q.front().S;
			q.pop();
			for(auto k : g[node]){
				if(!vis[k]){
					q.push({k, cost + 1});
					dis[k] = cost + 1;
					mx = max(mx, cost + 1);
					vis[k] = true;
				}
			}
		}
		long long sum = 0;
		bool ok = 1;
		for(int i = 1; i <= n; ++i){
			if(!vis[i])
				ok = 0;
			sum += mx - dis[i] + 1;
		}
		if(ok)
			ans = min(ans, sum);
		// cout << sum << ' ';
	}
	cout << ans << '\n';
}

int main() {
    fast;
    int t = 1;
    // cin >> t;
    while(t--)
    	solve();
	return 0;
}

Compilation message (stderr)

bosses.cpp: In function 'int main()':
bosses.cpp:61:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   61 |     while(t--)
      |     ^~~~~
bosses.cpp:63:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
   63 |  return 0;
      |  ^~~~~~

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