Adj list

#include <iostream>
#include <algorithm>
#include <numeric>
#include <set>
#include <queue>
#include <stack>
#include <vector>
#include <climits>
#include <string>
#include <cstdio>
#include <cmath>
#define task "TESTCODE"
using namespace std;
vector<vector<int>> Adj;
int x, y, n, m, tmp;
void read()
{
   cin >> n >> m;
   Adj.resize(n+1);
   for (int i = 1; i  <= m; ++ i)
   {
       cin >> x >> y;
       Adj[x].push_back(y);
   }
   cin >> tmp;
}
void indinhke(int u)
{
    for (int v : Adj[u])
    {
        cout << v << ' ';
    }
}
void solve()
{
   indinhke(tmp);
}
int main()
{
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   //freopen(task".INP", "r", stdin);
   //freopen(task".OUT", "w", stdout);
   read();
   solve();
}