#include <stdio.h>
#include <vector>
#define nmax 50010
using namespace std;
int n,m,x,i,y,fr[nmax];
vector <int> g[nmax],sol;
void dfs(int x)
{
    fr[x]=1;
    for (unsigned int i=0;i<g[x].size();i++)
        if (fr[g[x][i]]==0) dfs(g[x][i]);
    sol.push_back(x);
}
int main() {
freopen("sortaret.in","r",stdin);
freopen("sortaret.out","w",stdout);
scanf("%d %d",&n,&m);
for (i=1;i<=m;i++) {
    scanf("%d %d",&x,&y);
    g[x].push_back(y);
}
for (i=n;i>=1;i--)
    if (fr[i]==0) dfs(i);
for (i=sol.size()-1;i>=0;i--) printf("%d ",sol[i]);
return 0;
}