Submission #936258

#	Time	Username	Problem	Language	Result	Execution time	Memory
936258		wateronenn	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	2652 KiB

bosses

#include<bits/stdc++.h>
using namespace std;

const int N = 1e5+9;
vector<int> g[N];
bool visit[N]={0};
int dfs(int u){
	visit[u] = true;
	int nub = 1;
	for(auto v : g[u]){
		if(!visit[v]){
			nub+=dfs(v);
		}
	}
	
	return nub;
}

int main(){
	cin.tie(0)->sync_with_stdio(false);
	int n,m;
	cin>>n;
	for(int i=1;i<=n;i++){
		int k;
		cin>>k;
		for(int j=1;j<=k;j++){
			cin>>m;
			g[i].push_back(m);
		}
	}
	int sum = 0;
	for(int i=1;i<=n;i++){
		if(!visit[i]) {
			int res = dfs(i);
		//	cout<<res<<" ";
			sum += 1<<res-1;
		}

	}
	cout<<sum;
	
	return 0;
}
/*

4
1 4
3 1 3 4
2 1 2
1 3


*/

Compilation message (stderr)

bosses.cpp: In function 'int main()':
bosses.cpp:36:17: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   36 |    sum += 1<<res-1;
      |              ~~~^~

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