Cod sursa(job #3168602)
Utilizator | Data | 12 noiembrie 2023 19:55:16 | |
---|---|---|---|
Problema | Parcurgere DFS - componente conexe | Scor | 15 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.48 kb |
#include <bits/stdc++.h>
#define SIZE 100005
using namespace std;
ifstream f("dfs.in");
ofstream g("dfs.out");
vector<int>a[SIZE];
int vz[SIZE],n,m;
void dfs(int x)
{
vz[x]=1;
for(auto u:a[x])
if(!vz[u])dfs(u);
}
int main()
{
int i,sol=0,x,y;
f>>n>>m;
for(i=1;i<=m;i++)
{
f>>x>>y;
a[x].push_back(y);
}
for(i=1;i<=n;i++)
if(!vz[i])
{
dfs(i);
sol++;
}
g<<sol;
}