/*  
    *
    * soon on twitch : ex3qute 
    * 
    * ax ah al
    * kwxkwxkxkxwkxkwxkw
    * dumnezeu sa o ierte
*/


#include <bits/stdc++.h>  
using namespace std;  
#define ull unsigned long long  
#define ll long long  
#define pb push_back  
#define fastio ios_base::sync_with_stdio(0); cin.tie(nullptr);  
const int MOD = 1e9+7;
int di[4]={0,0,-1,1};  
int dj[4]={-1,1,0,0};  

const string FILENAME = "sortaret";
ifstream f(FILENAME + ".in");
ofstream g(FILENAME + ".out");


#ifndef exe
#define cin f
#define cout g
#endif



vector<int> ls[50001];
int vz[50001];
deque<int> q;
int n,m;
void dfs(int k) {
    vz[k] = 1;
    for(auto p : ls[k]) {
        if(!vz[p]) dfs(p);
    }

    q.push_front(k);
    
    
    
}

signed main(){   

    
    cin >> n >> m;

    for(int i=1;i<=m;++i) {
        int x,y;
        cin >> x >> y;
        ls[x].pb(y);
    }

    for(int i=1;i<=n;++i) {
        if(!vz[i]) dfs(i);
    }

    while(!q.empty()) {
        cout << q.front() << ' ';
        q.pop_front();
    }

    

    return 0;
}