Submission #422532

#	Time	Username	Problem	Language	Result	Execution time	Memory
422532		flappybird	Game (IOI14_game)	C++14	100 / 100	620 ms	38672 KiB

game

#include "game.h"

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,fma")

using namespace std;
typedef int ll;

#define MAX 1900
ll N;
ll p[MAX];
ll line[MAX][MAX];
ll num[MAX];
ll mp[MAX][MAX];

ll find(ll x) {
	if (x == p[x]) return x;
	return p[x] = find(p[x]);
}

void uni(ll x, ll y) {
	x = find(x);
	y = find(y);
	ll i;
	p[y] = x;
	num[x] += num[y];
	for (i = 0; i < N; i++) if (i != x && i != y) line[i][x] += line[i][y], line[x][i] += line[y][i];
}

void initialize(int n) {
	N = n;
	ll i, j;
	for (i = 0; i < N; i++) p[i] = i, num[i] = 1;
	for (i = 0; i < N; i++) for (j = 0; j < N; j++) mp[i][j] = -1;
}

int hasEdge(int u, int v) {
	ll uu, vv;
	uu = u, vv = v;
	if (mp[uu][vv] != -1) return mp[uu][vv];
	u = find(u);
	v = find(v);
	if (line[u][v] == num[u] * num[v] - 1) {
		uni(u, v);
		mp[uu][vv] = mp[vv][uu] = 1;
		return 1;
	}
	line[u][v]++;
	line[v][u]++;
	mp[uu][vv] = mp[vv][uu] = 0;
	return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 27 / 27
• Subtask 3: 58 / 58