제출 #1318997

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1318997		ghammazhassan	Norela (info1cup18_norela)	C++20	0 / 100	0 ms	332 KiB

norela

// #include <bits/stdc++.h>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <map>
#include <unordered_map>
#include <vector>
#include <iomanip>
#include <string>
#include <queue>
#include <set>
#include <deque>
using namespace std;
#define int long long
#define endl "\n"
#define fi first
#define se second
const int M=1e9+7;
const int inf = 1e15;
const int LOG=17;
const int N=2e5+5;
int n , m , c , w , k , t=1 , q=1 , x , y , z , l , r;
void solve(){
    cin >> n >> m;
    vector<vector<int>>a(m);
    for (int i=0;i<m;i++){
        cin >> k;
        vector<int>b(k);
        for (int j=0;j<k;j++){
            cin >> b[j];
        }
        a[i]=b;
    }
    for (int i=1;i<(1<<m);i++){
        vector<int>vi(n+1);
        for (int j=0;j<m;j++){
            if (i&(1<<j)){
                for (int k:a[j]){
                    vi[k]^=1;
                }
            }
        }
        bool f=1;
        for (int j=1;j<=n;j++){
            if (!vi[j])f=0;
        }
        if (f){
            cout << __builtin_popcount(i) << endl;
            for (int j=0;j<m;j++){
                if (i&(1<<j)){
                    cout << j+1 << " ";
                }
            }
            cout << endl;
            return;
        }
    }

}
signed main()    
{   
    // #ifndef ONLINE_JUDGE
    // freopen("input.txt","r" ,stdin);
    // freopen("output.txt","w",stdout);
    // #endif
    ios::sync_with_stdio(0);//DO NOT USE IN INTERACTIVE
    cin.tie(0), cout.tie(0);//DO NOT USE IN INTERACTIVE
    cout << fixed << setprecision(9);
    srand(time(0));
    // int t=1;
    // cin >> t;
    for (int _=1;_<=t;_++){
        solve();
        q++;
    }
}

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