Submission #329940

#	Time	Username	Problem	Language	Result	Execution time	Memory
329940		Sho10	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	492 KiB

bosses

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long
#define double long double
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod (10*10*10*10*10*10*10*10*10+7)
#define PI 3.14159265359
#define MAXN 100005
#define INF 1000000005
#define LINF 1000000000000000005ll
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,k,ans=LINF,res=0;
vector<ll>g[5005];
map<ll,ll>viz;
ll dfs(ll node){
    viz[node]=1;
    ll sum=1;
for(auto it : g[node]){
    if(viz[it]){
        continue;
    }
    sum+=dfs(it);
}
if(sum==0){
    sum=1;
}
res+=sum;
return sum;
}
int32_t main(){
CODE_START;
cin>>n;
for(ll i=1;i<=n;i++)
{
cin>>k;
for(ll j=1;j<=k;j++)
{
    ll x;
    cin>>x;
    g[x].pb(i);
}
}
for(ll i=1;i<=n;i++)
{
    viz.clear();
   res=0;
   ll x=dfs(i);
    ll s1=0;
    for(ll j=1;j<=n;j++)
    {
        if(viz[j]==0){
            s1++;
        }
    }
    if(s1==0){
          //  cout<<i<<' '<<res<<endl;
        ans=min(ans,res);
    }
}
cout<<ans<<endl;
}

Compilation message (stderr)

bosses.cpp: In function 'int32_t main()':
bosses.cpp:56:7: warning: unused variable 'x' [-Wunused-variable]
   56 |    ll x=dfs(i);
      |       ^

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