#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

ifstream fin ("sortaret.in");
ofstream fout ("sortaret.out");

const int NMAX=5e4+5;

int viz[NMAX];
int rez[NMAX];
int kon;

vector<int>v[NMAX];

void dfs(int x)
{
    viz[x]=1;
    for(auto i:v[x])
    {
        if(viz[i]==0)
            dfs(i);
    }
    rez[++kon]=x;
}

int main()
{
    int n,m,i,j,x,y;
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>x>>y;
        v[x].push_back(y);
    }
    for(i=1;i<=n;i++)
        if(viz[i]==0)
            dfs(i);
    for(i=n;i>=1;i--)
        fout<<rez[i]<<" ";
    return 0;
}