#include <bits/stdc++.h>

using namespace std;

ifstream f("sortaret.in");
ofstream g("sortaret.out");
const int N = 50010;
vector<int> v[N];
int n,m,x,y,i,j,gi[N],q[N];
int main()
{
    f>>n>>m;
    for(; m; m--)
    {
        f>>x>>y;
        v[x].push_back(y);
        gi[y]++;
    }
    for(i=1;i<=n;i++)
        if(!gi[i])
            q[++j]=i;
    for(i=1;j<n;i++)
        for(auto it:v[q[i]])
    {
        gi[it]--;
        if(!gi[it])
            q[++j]=it;
    }
    for(x=1;x<=n;x++)
        g<<q[x]<<' ';
    return 0;
}