#include<fstream>
#include<vector>
#include<bitset>
using namespace std;
ifstream cin("sortaret.in");
ofstream cout("sortaret.out");
vector<unsigned short> a[50001],c;
bitset<50001> b;
void A(int i)
{
    b[i]=1;
    for(int j:a[i])
        if(!b[j])
            A(j);
    c.push_back(i);
}
int main()
{
    int m,n;
    for(cin>>n>>m;m--;) {
        int i,j;
        cin>>i>>j,a[i].push_back(j);
    }
    for(int i=1;i<=n;++i)
        if(!b[i])
            A(i);
    for(;n;cout<<c[--n]<<' ');
    return 0;
}