Submission #1162663

#	Time	Username	Problem	Language	Result	Execution time	Memory
1162663		jmyszka2007	Hiperkocka (COCI21_hiperkocka)	C++17	0 / 110	0 ms	320 KiB

Main

#include <bits/stdc++.h>
#include <fstream>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template<class A, class B>
ostream& operator<<(ostream& o, const pair<A, B>& p) {return o << '(' << p.first << ", " << p.second << ')';}
template<size_t Index = 0, typename... Types>
ostream& printTupleElements(ostream& o, const tuple<Types...>& t) {if constexpr (Index < sizeof...(Types)){if(Index > 0){o << ", ";}o << get<Index>(t);printTupleElements<Index + 1>(o, t);}return o;}
template<typename... Types>
ostream& operator<<(ostream& o, const tuple<Types...>& t){o << "(";printTupleElements(o, t);return o << ")";}
template<class T>
auto operator<<(ostream& o, const T& x) -> decltype(x.end(), o){o << '{';bool first = true;for (const auto& e : x){if (!first){o << ", ";}o << e;first = false;} return o << '}';}
struct custom_hash {static uint64_t splitmix64(uint64_t x) {x += 0x9e3779b97f4a7c15;x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;x = (x ^ (x >> 27)) * 0x94d049bb133111eb;return x ^ (x >> 31);}
size_t operator()(uint64_t x) const {static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();return splitmix64(x + FIXED_RANDOM);}};
//#define DEBUG
#ifdef DEBUG
#define fastio()
#define debug(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
#else
#define fastio() ios_base::sync_with_stdio(0); cin.tie(0);
#define debug(...)
#endif
typedef long long ll;
#define pi pair<int, int>
#define pll pair<ll, ll>
#define st first
#define nd second
#define vi vector<int>
#define vll vector<ll>
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
void solve() {
	//ifstream cin("nazwa.in");
	//ofstream cout("nazwa.out");
	int n;
	cin >> n;
	vector<vi>g(n + 1);
	for(int i = 1; i <= n; i++) {
		int a, b;
		cin >> a >> b;
		g[a].eb(b);
		g[b].eb(a);
	}
	vector<pi>kr;
	vi pre(n + 1), post(n + 1);
	int akt_pre = 0, akt_post = 0;
	auto czy = [&](int a, int b) {
		return pre[a] <= pre[b] && post[a] >= post[b];
	};
	auto dfs = [&](auto &&dfs, int v, int o) -> void {
		pre[v] = akt_pre++;
		if(v != o) {
			kr.eb(o, v);
		}
		for(auto x : g[v]) {
			if(x != o) {
				dfs(dfs, x, v);
			}
		}
		post[v] = akt_post++;
	};
	dfs(dfs, 0, 0);
	vi pus(n + 1, -1);
	pus[0] = 0;
	vector<vi>tri(1, pus);
	for(int i = 0; i < n; i++) {
		auto [a, b] = kr[i];
		if(i == 0) {
			tri[0][b] = 1;
		}
		else {
			int oj_a = -1;
			for(auto x : g[a]) {
				if(pre[x] < pre[b]) {
					oj_a = x;
				}
			}
			vector<vi>ntri;
			debug(a, b, oj_a);
			for(auto T : tri) {
				vi A = T;
				A[b] = A[oj_a];
				for(int j = 0; j <= n; j++) {
					if(A[j] != -1) {
						if(czy(oj_a, a)) {
							if(!czy(a, j)) {
								A[j] ^= (1 << i);
							}
						}
						else {
							if(czy(oj_a, j)) {
								//debug(j);
								A[j] ^= (1 << i);
							}
						}
					}
				}
				vi B = A;
				for(int j = 0; j <= n; j++) {
					if(B[j] != -1) {
						B[j] ^= (1 << i);
					}
				}
				ntri.eb(A);
				ntri.eb(B);
			}
			tri = ntri;
		}
	}
	cout << sz(tri) << '\n';
	for(auto x : tri) {
		for(auto y : x) {
			cout << y << ' ';
		}
		cout << '\n';
	}
}
int main() {
	fastio();
	int t = 1;
	//cin >> t;
	while(t--) {
		solve();
	}
}

• Subtask 1: 0 / 110