Submission #1200311

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200311		brover29	Hiperkocka (COCI21_hiperkocka)	C++17	110 / 110	26 ms	8264 KiB

Main

#include <bits/stdc++.h>
//qwerty47924692
using namespace std;
using ll = long long;
const ll N=2e5+29;
const string br="617283";
#define sz(a)(ll)a.size()
#define f first
#define s second
ll n,num[N];
vector<pair<ll,ll>>g[N];
void dfs(ll v,ll pr=0,ll x=0){
    num[v]=x;
    for(auto [to,i]:g[v]){
        if(to==pr)continue;
        dfs(to,v,x^(1ll<<(i-1)));
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin>>n;
    for(ll i=1;i<=n;i++){
        ll v,u;
        cin>>v>>u;
        g[v].push_back({u,i});
        g[u].push_back({v,i});
    }dfs(0);
    cout<<(1ll<<(n-1))<<'\n';
    for(ll i=0;i<=(1ll<<n)-1;i++){
        if(__builtin_popcountll(i)&1)continue;
        for(ll j=0;j<=n;j++)cout<<(num[j]^i)<<' ';
        cout<<'\n';
    }
}

• Subtask 1: 110 / 110