#include <iostream>
#include <stdio.h>
#include <vector>

using namespace std;

FILE *f=fopen("sortaret.in","r");
FILE *g=fopen("sortaret.out","w");

vector<int>v[50001];
vector<int>::iterator it;
int c[50001],n,m,i,a,b,nr[50001];

void solve();
void write();


int main()
{
    fscanf(f,"%d%d",&n,&m);
    for(i=1;i<=m;i++)
    {
        fscanf(f,"%d%d",&a,&b);
        v[a].push_back(b);
        nr[b]++;
    }
    solve();
    write();

    fclose(g);
    return 0;
}
void solve()
{
    int i;
    for(i=1;i<=n;i++)
    if(nr[i]==0)c[++c[0]]=i;
    for(i=1;i<=n;i++)
    {
        int x=c[i];
        for(it=v[x].begin(); it!=v[x].end();it++)
        {
            nr[*it]--;
            if(nr[*it]==0) c[++c[0]] = *it;
        }
    }
}
void write()
{
    int i;
    for(i=1;i<=n;i++)
    fprintf(g,"%d ",c[i]);
}