Submission #897233

#	Time	Username	Problem	Language	Result	Execution time	Memory
897233		aqxa	Game (IOI14_game)	C++17	0 / 100	2 ms	2396 KiB

game

#include "game.h"
#include <bits/stdc++.h>
using namespace std;
 
using ll = long long; 
 
const int N = 1505; 
 
int a[N][N], cnt[N][N];
int _n;  
vector<int> e; 
int get(int x) { return e[x] < 0 ? x : e[x] = get(e[x]); }
bool unite(int x, int y) {
	x = get(x); y = get(y); 
	if (x == y) return false; 
	if (e[x] > e[y]) swap(x, y); 
	e[x] += e[y]; e[y] = x; 
	for (int i = 0; i < _n; ++i) {
		if (e[i] < 0 && i != x && i != y) {
			cnt[min(x, i)][max(x, i)] += cnt[min(y, i)][max(y, i)]; 
		}
	}
	return true; 
}
 
 
void initialize(int n) {
	_n = n; 
	e = vector<int>(n, -1);
 
	for (int i = 0; i < n; ++i) {
		for (int j = i + 1; j < n; ++j) {
			cnt[i][j] = 1; 
		}
	}
}
 
int hasEdge(int u, int v) {
	u--; v--; 
	if (u > v) swap(u, v); 
	int cu = get(u), cv = get(v); 
	if (cu == cv) return 1; 
	if (cu > cv) swap(cu, cv); 
 
	if (cnt[cu][cv] == 1) {
		unite(cu, cv); 
		// int np = get(cu); 
		// for (int i = 0; i < _n; ++i) {
		// 	if (e[i] < 0 && i != cu && i != cv) {
		// 		cnt[min(i, np)][max(i, np)] = cnt[min(i, cu)][max(i, cu)] + cnt[min(i, cv)][max(i, cv)]; 
		// 	}
		// }
		return 1; 
	} else {
		cnt[cu][cv]--; 
		return 0; 
	}
}
 

• Subtask 1: 0 / 15
• Subtask 2: 0 / 27
• Subtask 3: 0 / 58