#include <cstdio>
#include <cstring>
#include <vector>
using namespace std;

#define MAXN 16010

int N, M, viz[MAXN], deg[MAXN];
vector<int> G[MAXN];

void solve_and_write(void)
{
    int i, j, k;

    for (i = 1; i <= N; i++)
    {
        for (j = 1; j <= N; j++)
            if (!viz[j] && deg[j] == 0)
            {
                viz[j] = 1, printf("%d ", j);
                for (k = 0; k < G[j].size(); k++)
                    deg[G[j][k]]--;
                break;
            }
    }
}

void read_data(void)
{
    int i, a, b;

    scanf("%d %d\n", &N, &M);
    for (i = 1; i <= M; i++)
        scanf("%d %d", &a, &b), G[a].pb(b), deg[b]++;
}

int main(void)
{
    freopen("sortaret.in", "rt", stdin);
    freopen("sortaret.out", "wt", stdout);

    read_data();
    solve_and_write();

    return 0;
}