#include <bits/stdc++.h>
using namespace std;

const int N = 50005;

vector <int> v[N];
int deg[N];
int q[N];

int main(){
    int n, m;
    freopen("sortaret.in", "r", stdin);
    freopen("sortaret.out", "w", stdout);
    scanf("%d %d", &n, &m);
    for(int i = 1;i <= m;i++){
        int x, y;
        scanf("%d %d", &x, &y);
        v[x].push_back(y);
        deg[y]++;
    }
    for(int i = 1;i <= n;i++){
        if(deg[i] == 0){
            q[++q[0]] = i;
        }
    }
    for(int i = 1;i <= n;i++){
        for(auto it : v[q[i]]){
            deg[it]--;
            if(deg[it] == 0){
                q[++q[0]] = it;
            }
        }
    }
    for(int i = 1;i <= n;i++){
        printf("%d ", q[i]);
    }
    return 0;
}