Submission #783051

#	Time	Username	Problem	Language	Result	Execution time	Memory
783051		1075508020060209tc	Political Development (BOI17_politicaldevelopment)	C++14	4 / 100	3098 ms	332608 KiB

politicaldevelopment

#include<bits/stdc++.h>
using namespace std;
//#define int long long
#define X first
#define Y second
int n;int K;
set<int>st[50100];
bitset<50100>tbl[50100];

signed main(){
cin.tie(0);
ios_base::sync_with_stdio(0);
cin>>n>>K;
for(int i=0;i<n;i++){
    int d;
    cin>>d;
    for(int j=1;j<=d;j++){
        int v;
        cin>>v;
        st[i].insert(v);
        tbl[i][v]=1;
    }
    tbl[i][i]=1;
    st[i].insert(i);
}
int ans=1;


for(int i=0;i<n;i++){
    vector<int>vc;
    for(auto it=st[i].begin();it!=st[i].end();it++){
        vc.push_back(*it);
    }
    for(int A=0;A<(1<<vc.size());A++){
        if(__builtin_popcount(A)<=ans){continue;}
        if(__builtin_popcount(A)>K){continue;}
        int ok=1;
       // cout<<A<<"A\n";
       bitset<50100>tmp;
       for(int j=0;j<vc.size();j++){
            if( ((A&(1<<j))!=0) ){tmp[vc[j]]=1;}
       }
        for(int j=0;j<vc.size();j++){
           // cout<<vc[j]<<" "<<ok<<endl;;
            if(!ok){break;}
            if(((A&(1<<j))!=0)){
                if(((tbl[vc[j]]&tmp)!=tmp) ){
                    ok=0;
                }
            }
        }
        //cout<<ok<<endl;
        if((ok&&(__builtin_popcount(A)>ans)) ){
            ans=__builtin_popcount(A);
        }
    }
}
cout<<ans<<endl;
//return 0;
/*
for(int i=0;i<ans.size();i++){
    cout<<ans[i]<<" ";
}*/

}

Compilation message (stderr)

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:40:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |        for(int j=0;j<vc.size();j++){
      |                    ~^~~~~~~~~~
politicaldevelopment.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         for(int j=0;j<vc.size();j++){
      |                     ~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23