#include<stdio.h>
#include<vector>
using namespace std;
#define nmax 50005
int n, m, x, y, i, inc, sf, el;
vector <int> ma[nmax];
vector <int> ::iterator it;
int grint[nmax], co[nmax];

void citire()
{
    scanf("%ld %ld",&n,&m);
    for (i=1;i<=m;i++)
    {
        scanf("%ld %ld",&x,&y);
        ma[x].push_back(y);
        grint[y]++;
    }
}

void rezolvare()
{
    for (i=1;i<=n;i++)
        if (grint[i]==0)
            co[++sf]=i;
    inc=1;
    while (inc<=sf)
    {
        el=co[inc]; inc++;
        for (it=ma[el].begin();it!=ma[el].end();it++)
        {
            grint[*it]--;
            if (grint[*it]==0)
                co[++sf]=*it;
        }
    }


}

int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    citire();
    rezolvare();
    for (i=1;i<=n;i++)
        printf("%ld ",co[i]);
    return 0;
}