Pagini recente » Diferente pentru olimpici intre reviziile 27 si 28 | Istoria paginii runda/speed3 | Cod sursa (job #2013663)
#include <iostream>
#include <cstdio>
using namespace std;
int n;
struct arb
{
int tata;
int h;
} v[100001];
int rad(int nod)
{
if(v[nod].tata==nod)
return nod;
else
v[nod].tata=rad(v[nod].tata);
return v[nod].tata;
}
void uni(int a,int b)
{
a=rad(a);
b=rad(b);
if(v[a].h>v[b].h)
{
v[b].tata=a;
v[b].h=v[a].h+1;
}
else
{
v[a].tata=b;
v[a].h=v[b].h+1;
}
}
int main()
{
freopen("disjoint.in","r",stdin);
freopen("disjoint.out","w",stdout);
int i,j,m,p,k;
scanf("%d%d",&n,&m);
for(i=1; i<=n; i++)v[i].tata=i;
for(i=0; i<m; i++)
{
scanf("%d%d%d",&p,&j,&k);
if(p==1)
{
uni(j,k);
}
else
{
int d=rad(j),f=rad(k);
if(d==f)printf("DA\n");
else printf("NU\n");
}
}
return 0;
}