Submission #1319036

#	Time	Username	Problem	Language	Result	Execution time	Memory
1319036		muhammad-mutahir	Norela (info1cup18_norela)	C++20	0 / 100	38 ms	47612 KiB

norela

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

#define print(l) for(auto i:l) cout<<i<<" ";cout<<endl;
#define input(t,l,n) vector<t>l(n);for(int i = 0;i<n;i++)cin>>l[i];
#define int long long
#define pb push_back
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
#define all(l) l.begin(),l.end()
#define pii pair<int,int>
#define fi first
#define se second

const int M = 1e9+7;
const int inf = 1e18;


int bp(int x, int y, int p){
    int res = 1;
    x = x % p;
    while (y > 0) {
 
        if (y & 1)
            res = (res * x) % p;
        y = y >> 1;
        x = (x * x) % p;
    }
    return res;
}
 
int MI(int n, int p){
    return bp(n, p - 2, p);
}
int mul(int x,int y, int p){
    return x * 1ull * y % p;
}
int di(int x,int y, int p){
    return mul(x, MI(y, p), p);
}


int n , m , k , q;

void solve(int testcase_number){
    cin>>n>>m;
    vector<bitset<65>> f(1ll<<m);
    // bitset<65> f[(1ll<<m)+10];
    vector<vector<int>> ans((1ll<<m)+10);
    vector<bitset<65>>d;
    for(int i = 0;i<m;i++){
    	int sz;
    	cin>>sz;
    	input(int,l,sz);
    	bitset<65>bs;
    	for(int i:l){
    		bs[i] = 1;
    	}
    	d.pb(bs);
    }

    bitset<65>ck;
    for(int i = 1;i<=n;i++)ck[i] = 1;

    for(int i = 1;i<(1ll<<m);i++){
    	// cout<<__builtin_popcount(i)<<endl;
    	int fst = (i&-i);
    	
    	int idx = log2(fst);
    	
    	f[i] = (f[i- fst ]^d[idx]);
    	
    	ans[i] = ans[i-fst];
    	ans[i].pb(idx+1);
    }
    // print(ans[2]);
    vector<int>an;
    for(int i = n;i>=1;i--){
    	an.pb(n);
    }
    for(int i = 1;i<(1ll<<m);i++){
    	if((f[i]&ck) == ck){
	    	// cout<<i <<" "<<f[i]<<endl;
    		// cout<<ans[i].size()<<endl;
    		sort(all(ans[i]));
    		// print(ans[i]);
    		if(ans[i] < an){
    			an = ans[i];
    		}
    		// break;
    	}
    }
    cout<<an.size()<<endl;
    print(an);
    




}


signed main(){
    ios::sync_with_stdio(0);//DO NOT USE IN INTERACTIVE
    cin.tie(0), cout.tie(0);
    cout << fixed<<setprecision(9);

    int t = 1;
    // cin>>t;
    for(int i = 1;i<=t;i++){
        solve(i);
    }

}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25