Submission #397179

#	Time	Username	Problem	Language	Result	Execution time	Memory
397179		keta_tsimakuridze	Bosses (BOI16_bosses)	C++14	100 / 100	840 ms	672 KiB

bosses

#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N=5005,mod=1e9+7,Inf=1e16;
int t,n,fix[N],h[N];
long long sum;
queue<int> q;
vector<int>V[N];
string s;
 main(){
	// t=1;
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin >> n;
	for(int i=1;i<=n;i++){
		int c,a;
		cin >> c;
		while(c--){
			cin>>a;
			V[a].push_back(i);
		}
	}
	long long ans = Inf;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			fix[j] = 0;
		}
		q.push(i);
		fix[i]=1;  h[i] = 1;
		int cnt = 0;
		sum = 0;
		while(q.size()) { 
			int u=q.front();  
			q.pop();
			cnt++; 
			sum+=h[u];
			for(int j=0;j<V[u].size();j++){
				if(!fix[V[u][j]]) { 
					fix[V[u][j]] = 1; 
					h[V[u][j]] = h[u] + 1;
					q.push(V[u][j]);
				}
			}
		} 
		
		if(cnt==n)ans=min(ans,sum);
	}
	cout<<ans;
}

Compilation message (stderr)

bosses.cpp:5:32: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+16' to '2147483647' [-Woverflow]
    5 | const int N=5005,mod=1e9+7,Inf=1e16;
      |                                ^~~~
bosses.cpp:11:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 |  main(){
      |       ^
bosses.cpp: In function 'int main()':
bosses.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    for(int j=0;j<V[u].size();j++){
      |                ~^~~~~~~~~~~~

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