#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
//#include 
using namespace std;
typedef long long ll;
const int maxn = 1e5 + 10;
const ll INF = 3e16 + 10;
vector graph[maxn];
bool visited[maxn];
stack st;
void dfs(int node) {
    visited[node] = true;
    
    for(int i = 0; i < (int) graph[node].size(); i++) {
        int neighbour = graph[node][i];
        if(!visited[neighbour]) {
            dfs(neighbour);
        }
    }
    st.push(node);
}
int main() {
    ios_base::sync_with_stdio(false);
    int n, m;
    cin >> n >> m;
    
        for(int j = 0; j < m; j++) {
            int a, b;
            cin >> a >> b;
            a--; b--;
            graph[a].push_back(b);
            
    }
    for(int i = 0; i < n; i++) {
        if(!visited[i]) {
            dfs(i);
        }
    }
    while(!st.empty()) {
        cout << st.top() + 1 << " ";
        st.pop();
    }
    return 0;
}