Cod sursa(job #1497455)
Utilizator | Data | 6 octombrie 2015 20:37:54 | |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.5 kb |
#include <fstream>
#include <iostream>
using namespace std;
ifstream f("dfs.in");
ofstream g("dfs.out");
int x,n,k=0,y;
long m,i;
int v[1001];
int a[1001][1001];
void dfs(int x){
v[x]=1;
for(i=1;i<=n;i++)if (v[i]==0&&a[x][i]==1) dfs(i);
}
int main()
{
f>>n>>m;
for (i=1;i<=m;i++){
f>>x>>y;
a[x][y]=a[y][x]=1;
}
x=1;
while(x<=n){
k++;
dfs(x);
while(v[x]==1&&x<=n)x++;
}
k--;
g<<k;
g.close();
}