#include<bits/stdc++.h>
using namespace std;
int graph[1001][1001];
int visit[1001];
int n, e;
stack<int>ans;
 
void dfs(int start)
{
    visit[start] = 1;
    for(int j = 1; j <= n; j++)
    {
        if(visit[j] == 0 && graph[start][j] != 0)
        {
            visit[j] = 1;
            dfs(j);
        }
    }
    ans.push(start);
}
 
int main()
{
    cin>>n>>e;
    int u, v;
    for(int i = 1; i <= e; i++)
    {
        cin>>u>>v;
        graph[u][v] = 1;
    }
    for(int i = 1; i <= n; i++)
    {
        if(visit[i] == 0)
        {
            dfs(i);
        }
    }
 
    while(!ans.empty())
    {
        cout<<ans.top()<<" ";
        ans.pop();
    }
    cout<<endl;
 
 
 
}
 

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

OCA4ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMSAzICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMiAzICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMyA0ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgMyA1ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgNSA2ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgNCA2ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgNSA4ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgNiA3IA==

8 8                                                                              1 3                                                                              2 3                                                                              3 4                                                                              3 5                                                                              5 6                                                                              4 6                                                                              5 8                                                                              6 7