#include <bits/stdc++.h>
#define pb push_back

using namespace std;

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

void debug_out() { cerr << '\n'; }
template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << H; debug_out(T...);}
#define dbg(...) cerr << #__VA_ARGS__ << " ->", debug_out(__VA_ARGS__)
#define dbg_v(x, n) do{cerr<<#x"[]: ";for(int _=0;_<n;++_)cerr<<x[_]<<" ";cerr<<'\n';}while(0)
#define dbg_ok cerr<<"OK!\n"

typedef pair<int,int> pii;
typedef long long int ll;
typedef long double ld;

const int DMAX = 5e4+10;

vector <int> arb[DMAX];

bool uz[DMAX];

int n,m;

void dfs(int node);

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int t,i,j;
    int x,y,z;

    fin>>n>>m;
    for(i=1;i<=m;i++){
        fin>>x>>y;
        arb[y].pb(x);
    }
    for(i=1;i<=n;i++)
        if(!uz[i])
            dfs(i);

    return 0;
}
void dfs(int node){
    uz[node]=true;
    for(auto& it:arb[node])
        if(!uz[it])
            dfs(it);
    fout<<node<<' ';
}