Submission #975707

#	Time	Username	Problem	Language	Result	Execution time	Memory
975707		ShaShi	Game (APIO22_game)	C++17	30 / 100	4038 ms	55416 KiB

game

#include "game.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
#define pii pair<int, int>



using namespace std;

typedef long long ll;


const int MAXN = (int)1e6 + 7;
const int LG = 60;


int dp[MAXN], pd[MAXN];
vector<int> adj[MAXN][2];
bool seen[MAXN];
int N, K, X;


bool check(int x) {
	if (dp[x] <= pd[x]) return 1;
	return 0;
}


void init(int n, int k) {
	N = n;
	K = k;

	for (int i=0; i<N; i++) dp[i] = pd[i] = -1;
}


void DFS(int v, bool b) {
	seen[v] = 1;

	if (b) dp[v] = (dp[v] == -1? X : min(dp[v], X));
	else pd[v] = (pd[v] == -1? X : max(pd[v], X));

	for (int u:adj[v][b]) if (!seen[u]) DFS(u, b);
}


int add_teleporter(int u, int v) {
	if (u < K && v < K) {
		if (u >= v) return 1;
		return 0;
	}

	adj[u][0].pb(v); adj[v][1].pb(u);

	fill(seen, seen+N+1, 0);

	if (u < K) {
		X = u;
		DFS(u, 0);
	} else if (v < K) {
		X = v;
		DFS(v, 1);
	} else {
		X = pd[u];
		DFS(u, 0);
	}

	for (int i=K; i<N; i++) if (dp[i] != -1 && pd[i] != -1 && dp[i] <= pd[i]) return 1;


	return 0;
}

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