#include <bits/stdc++.h>
#define PI 2*asin(1)
#define FOR(i,n) for(long long i = 0; i < n;i++)
using namespace std;

vector<vector<int>>a(100000);
//vector<vector<int>>b;
string toBinStr(long long a){
    return bitset<32>(a).to_string();
}
vector<int>used;
vector <int>res;
int p = -1;
bool f = false;
bool f1 = false;
void dfs(int v){
    used[v] = 1;
    for(int i : a[v])
        if (!used[i])
            dfs(i);
    used[v] = 2;
    res.push_back(v+1);
}
int main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    long long n,m;
    cin >> n >> m;
    FOR(i,n) used.push_back(0);
    FOR(i,m){
        int x,y; cin >> x >> y;
        x--;y--;
        a[x].push_back(y);
    }
    FOR(i,n)
        if(!used[i])
            dfs(i);
    reverse(res.begin(),res.end());
    for(int i : res) cout << i << ' ' ;
}