Submission #120453

#	Time	Username	Problem	Language	Result	Execution time	Memory
120453		anayk	Game (IOI14_game)	C++14	100 / 100	714 ms	28260 KiB

game

#include <iostream>

#define MAXN 2000

int N;
int cross[MAXN][MAXN];
int par[MAXN];

int root(int u)
{
	if(par[u] < 0)
		return u;
	par[u] = root(par[u]);
	return par[u];
}

void merge(int u, int v)
{
	if(par[u] > par[v])
		u ^= v ^= u ^= v;

	par[u] += par[v];
	par[v] = u;

	for(int i = 0; i < N; i++)
	{
		cross[u][i] += cross[v][i];
		cross[i][u] = cross[u][i];
	}
}

void initialize(int n)
{
	N = n;

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

int hasEdge(int u, int v)
{
	int x = root(u);
	int y = root(v);

	if(cross[x][y] + 1 == par[x]*par[y])
	{
		merge(x, y);
		return 1;
	}
	else
	{
		cross[x][y]++;
		cross[y][x]++;
		return 0;
	}
}

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