#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>

typedef long long ll;
typedef long double ld;

using namespace std;

const string FILENAME="sortaret";

#define OpenIN() freopen((FILENAME+".in").c_str(),"r",stdin)
#define OpenOUT() freopen((FILENAME+".out").c_str(),"w",stdout)
#define OpenALL() OpenIN(), OpenOUT()
#define infoarena() OpenALL()

const int N=50000+5;

int n,m;
vector<int>g[N];
bool viz[N];
vector<int>a;

inline void dfs(int nod)
{
    viz[nod]=1;
    for(auto &nou:g[nod])
    {
        if(viz[nou]==0)
        {
            dfs(nou);
        }
    }
    a.push_back(nod);
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    infoarena();
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        int a,b;
        cin>>a>>b;
        g[a].push_back(b);
    }
    for(int i=1;i<=n;i++)
    {
        if(viz[i]==0)
        {
            dfs(i);
        }
    }
    reverse(a.begin(),a.end());
    for(auto &x:a)
    {
        cout<<x<<" ";
    }
    cout<<"\n";
    return 0;
}
/**



**/