#include <bits/stdc++.h>
using namespace std;
int n,m,x,y,rez[50003],ap[50003],t;

void date()
{
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
}
vector <int> G[50003];

void dfs(int x)
{
    ap[x]=1;
    for(int i=0;i<G[x].size();i++)
        if(ap[G[x][i]]==0)
            dfs(G[x][i]);
    rez[++t]=x;
}

int main()
{
date();
    scanf("%d%d",&n,&m);
    while(m--)
    {
        scanf("%d%d",&x,&y);
        G[x].push_back(y);
    }

    for(int i=1;i<=n;i++)
        if(ap[i]==0)dfs(i);
    for(int i=n;i>=1;i--)
        printf("%d ",rez[i]);
    return 0;
}