#include<cstdio>
#include<vector>
using namespace std;
const int MAX=50005;
vector <int> g[MAX];
int sol[MAX];
bool viz[MAX];
int num;
void dfs(int u)
{
    viz[u]=1;
    for(int j=0; j<g[u].size(); ++j)
    {
        if(!viz[g[u][j]])
            dfs(g[u][j]);
    }
    sol[++num]=u;
}
void sortaret(int n)
{
    for(int i=1; i<=n; i++)
        if(!viz[i])
            dfs(i);
}
int main()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
    int n,m;
    scanf("%d%d",&n,&m);
    for(int i=1; i<=m; ++i)
    {
        int x,y;
        scanf("%d%d",&x,&y);
        g[x].push_back(y);
    }
    sortaret(n);
    for(int i=1; i<=n; ++i)
        printf("%d ",sol[i]);
    return 0;
}