Pagini recente » Cod sursa (job #1322052) | Cod sursa (job #3208162)
#include <iostream>
#include <fstream>
#include <algorithm>
#include <unordered_map>
#include <vector>
#include <tuple>
#include <queue>
#define inmat lin >= 1 && lin <= n && col >=1 && col <= m
using namespace std;
ifstream in("disjoint.in");
ofstream out("disjoint.out");
#define cin in
#define cout out
const int N = 1e5 + 2000;
int n, q;
int rad[N], rang[N];
void UNIRE(int x, int y)
{
if (rang[y] < rang[x])
{
rad[y] = x;
}
else
rad[x] = y;
if (rang[x] == rang[y]) // rang[y] >= rang[x] deci y este mult invingatoare
rang[y]++;
}
int find(int x)
{
int radacina = x;
while (radacina != rad[radacina])
{
radacina = rad[radacina];
}
int radacina2 = x;
while (radacina2 != rad[radacina2])
{
radacina2 = rad[radacina2];
rad[radacina2] = radacina;
}
return radacina;
}
int main()
{
cin >> n >> q;
for (int i = 1; i <= n; i++)
{
rad[i] = i;
rang[i] = 1;
}
int c, x, y;
for (int i = 1; i <= q; i++)
{
cin >> c >> x >> y;
if (cd == 2) {
//verific daca radacina arborilor in care se afla x respectiv y este egala
if (find(x) == find(y)) cout << "DA\n";
else cout << "NU\n";
}
else //unesc radacinile arborilor corespunzatori multimilor nodurilor x respectiv y
{
if (find(x) == find(y)) { fprintf(stderr, "%d ", i); return 0; }
UNIRE(find(x), find(y));
}
}
}