#include<cstdio>
#include<vector>
#include<bitset>

using namespace std;

int i,n,m,sorta[50010],nr;
vector<int> a[50010];
bitset<50010> fol;

void dfs(int i)
{
    fol[i]=1;

    for(int j=0;j<a[i].size();++j)
    if(!fol[a[i][j]]) dfs(a[i][j]);

    sorta[++nr]=i;
}

int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);

    scanf("%d%d",&n,&m);

    for(i=1;i<=m;++i)
    {
        int x,y;
        scanf("%d %d",&x,&y);
        a[x].push_back(y);
    }

    for(i=1;i<=n;++i)
    if(!fol[i]) dfs(i);

    for(i=n;i>0;--i) printf("%d ",sorta[i]);
    printf("\n");

    fclose(stdin);
    fclose(stdout);

    return 0;
}