#include <cstdio>
#include <vector>
#define vv 100001

using namespace std;

vector <int> v[vv];
int d[vv],n,m,a[50001];

void citire()
{
    freopen("sortaret.in","r",stdin);
    scanf("%d%d", &n, &m);
    int a,b;
    for (int i=1; i<=m; i++)
    {
        scanf("%d%d", &a, &b);
        v[a].push_back(b);
        ++d[b];
    }
}

void rezolvare()
{
    int k=0;
    while (k<n)
    {
        for (int i=1; i<=n; i++)
            if (d[i]==0)
            {
                printf("%d ", i);
                ++k;
                d[i]--;
                for (vector <int>::iterator it=v[i].begin(); it!=v[i].end(); it++)
                    --d[*it];
            }
    }
}

int main()
{
    citire();
    freopen("sortaret.out","w",stdout);
    rezolvare();
    return 0;
}