#include<stdio.h>
#include<vector>
#define MAXN 50005
using namespace std;
vector <int> v[MAXN];
int n,m,i,s,d,x,y,coada[MAXN],grad[MAXN];
int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    scanf("%d%d",&n,&m);
    for( ; m; --m)
    {
        scanf("%d%d",&x,&y);
        v[x].push_back(y);
        grad[y]++;
    }
    for(i=1;i<=n;i++)
        if(!grad[i])
            coada[++d]=i;
    s=1;
    while(s<=d)
    {
        for(i=0;i<(int) v[coada[s]].size();i++)
        {
            grad[v[coada[s]][i]]--;
            if(grad[v[coada[s]][i]]==0)
                coada[++d]=v[coada[s]][i];
        }
        s++;
    }
    for(i=1;i<=n;i++)
        printf("%d ",coada[i]);
    return 0;
}