#include <fstream>
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
 
void visit(int, vector<int>&, vector<int>&, vector<int>[]);
 
int main(int argc, char **argv)
{
    // INPUT
    ifstream indata("sortaret.in");
     
    int n, m;
    indata >> n >> m;
     
    vector<int> edges[n];
    vector<int> unvisited;
     
    // input data
    int x, y;
    for (int i = 0; i < m; i++) {
        indata >> x >> y;
        // set edges
        edges[x - 1].push_back(y - 1);
    }
    for (int i = 0; i < n; i++) {
        // set unvisited nodes
        unvisited.push_back(0);
    }
     
    indata.close();
     
    // TOPOLOGICAL SORT
    vector<int> topologicalSort;
	for (int i = 0; i < n; i++) {
        visit(unvisited[i], topologicalSort, unvisited, edges);
    }
     
    // OUTPUT
    ofstream outdata("sortaret.out");
    for (int i = 0; i < n; i++) {
        outdata << (topologicalSort[i] + 1) << " ";
    }
    outdata.close();
    return 0;
}
 
void visit(int node, vector<int>& topologicalSort, vector<int>& unvisited, vector<int> edges[]) {
    if (unvisited[node] == 0) {
		unvisited[node] = 1;
		
        for(vector<int>::iterator vit = edges[node].begin(); vit < edges[node].end(); vit++) {
            visit(*vit, topologicalSort, unvisited, edges);
        }
         
        topologicalSort.insert(topologicalSort.begin(), 1, node);
    }
}