package contests;

import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.*;

public class Solution {
    static TreeMap<Integer, List<Integer>> adjList;
    static Set<Integer> visited;
    static Stack<Integer> stack;
    public static void main(String[] args) throws IOException {
        Reader in = new Reader();
        stack = new Stack<>();
        int N = in.ni(), M = in.ni();
        Graph g = new Graph(N);
        for(int i=0;i<M;i++) {
            int v1 = in.ni()-1, v2 = in.ni()-1;
            g.addEdge(v1, v2);
        }
        for(int v: g.getAllVertices()) {
            if(visited.contains(v))continue;
            explore(v, g);
        }
        while(!stack.empty())
            System.out.printf("%d ", stack.pop()+1);
    }

    private static void explore(int v, Graph g) {
        visited.add(v);
        List<Integer> l = new ArrayList<>();
        for(int kk : g.getAdjVertices(v)) {
            l.add(kk);
            if(visited.contains(kk))continue;
            explore(kk, g);
        }
        Collections.sort(l, Collections.reverseOrder());
        stack.addAll(l);
    }

    static class Graph {
        Graph(int n) {
            adjList = new TreeMap<>();
            visited = new HashSet<>();
            for(int i=0;i<n;i++)
                adjList.putIfAbsent(i, new ArrayList<>());
        }

        void addEdge(int i, int j) {
            List<Integer> l = adjList.get(i);
            l.add(j);
            adjList.put(i, l);
        }

        List<Integer> getAdjVertices(int k) {
            return adjList.get(k);
        }

        Set<Integer> getAllVertices() {
            return adjList.keySet();
        }
    }

    static class Reader
    {
        final private int BUFFER_SIZE = 1 << 16;
        private DataInputStream din;
        private byte[] buffer;
        private int bufferPointer, bytesRead;

        public Reader()
        {
            din = new DataInputStream(System.in);
            buffer = new byte[BUFFER_SIZE];
            bufferPointer = bytesRead = 0;
        }

        public Reader(String file_name) throws IOException
        {
            din = new DataInputStream(new FileInputStream(file_name));
            buffer = new byte[BUFFER_SIZE];
            bufferPointer = bytesRead = 0;
        }

        public String rl() throws IOException
        {
            byte[] buf = new byte[1 << 16]; // line length
            int cnt = 0, c;
            while ((c = read()) != -1)
            {
                if (c == '\n')
                    break;
                buf[cnt++] = (byte) c;
            }
            return new String(buf, 0, cnt);
        }

        public int ni() throws IOException
        {
            int ret = 0;
            byte c = read();
            while (c <= ' ')
                c = read();
            boolean neg = (c == '-');
            if (neg)
                c = read();
            do
            {
                ret = ret * 10 + c - '0';
            }  while ((c = read()) >= '0' && c <= '9');

            if (neg)
                return -ret;
            return ret;
        }

        public long nl() throws IOException
        {
            long ret = 0;
            byte c = read();
            while (c <= ' ')
                c = read();
            boolean neg = (c == '-');
            if (neg)
                c = read();
            do {
                ret = ret * 10 + c - '0';
            }
            while ((c = read()) >= '0' && c <= '9');
            if (neg)
                return -ret;
            return ret;
        }

        public double nd() throws IOException
        {
            double ret = 0, div = 1;
            byte c = read();
            while (c <= ' ')
                c = read();
            boolean neg = (c == '-');
            if (neg)
                c = read();

            do {
                ret = ret * 10 + c - '0';
            }
            while ((c = read()) >= '0' && c <= '9');

            if (c == '.')
            {
                while ((c = read()) >= '0' && c <= '9')
                {
                    ret += (c - '0') / (div *= 10);
                }
            }

            if (neg)
                return -ret;
            return ret;
        }

        private void fillBuffer() throws IOException
        {
            bytesRead = din.read(buffer, bufferPointer = 0, BUFFER_SIZE);
            if (bytesRead == -1)
                buffer[0] = -1;
        }

        private byte read() throws IOException
        {
            if (bufferPointer == bytesRead)
                fillBuffer();
            return buffer[bufferPointer++];
        }

        public void close() throws IOException
        {
            if (din == null)
                return;
            din.close();
        }
    }
}