Submission #1225212

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225212		PanosPask	Game (APIO22_game)	C++20	0 / 100	0 ms	408 KiB

game

#include "game.h"
#include <bits/stdc++.h>

#define pb push_back

using namespace std;

int N, K;
vector<vector<int>> adj_list;
vector<vector<int>> revlist;
vector<int> priority;
vector<bool> visited;
vector<int> cnt;
vector<int> idx;

void dfs1(int node) {
	if (visited[node]) {
		return;
	}

	visited[node] = true;
	for (auto neigh : adj_list[node]) {
		dfs1(neigh);
	}

	priority.pb(node);
}

void dfs2(int node) {
	if (visited[node]) {
		return;
	}
	
	visited[node] = true;
	if (idx[node] == -1) {
		idx[node] = cnt.size();
		cnt.pb(0);
	}
	cnt[idx[node]]++;

	for (auto neigh : adj_list[node]) {
		idx[neigh] = idx[node];
		dfs2(neigh);
	}
}

void components(void) {
	visited.assign(N, false);
	priority.clear();
	for (int i = 0; i < N; i++) {
		dfs1(i);
	}

	idx.assign(N, -1);
	visited.assign(N, false);
	cnt.clear();
	while (!priority.empty()) {
		dfs2(priority.back());
		priority.pop_back();
	}
}

void init(int n, int k) {
	N = n;
	K = k;
	adj_list.resize(N);
	revlist.resize(N);

	for (int i = 0; i < K - 1; i++) {
		adj_list[i].pb(i + 1);
		revlist[i + 1].pb(i);
	}
}

int add_teleporter(int u, int v) {
	adj_list[u].pb(v);
	revlist[v].pb(u);

	components();

	for (int i = 0; i < K; i++) {
		if (cnt[idx[i]] > 1) {
			return 0;
		}
	}

	return 1;
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 30
• Subtask 5: 0 / 40