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

vector<int>v[50005];
int n,m,cd[50005],k;
bool viz[50005];

void dfs(int x){
    for(int i=0;i<v[x].size();i++)
    if(!viz[v[x][i]])
    {
        viz[v[x][i]]=1;
        dfs(v[x][i]);
    }
    cd[++k]=x;
}

int main(){
    int x,y;
    freopen("sortaret.in","r",stdin);
    freopen("sortaret.out","w",stdout);
        scanf("%d %d",&n,&m);

        for(int i=1;i<=m;i++)
        {
            scanf("%d %d",&x,&y);
            v[x].push_back(y);
        }
        for(int i=1;i<=n;i++)
        if(!viz[i])
        {
            viz[i]=1;
            dfs(i);
        }
        for(int i=n;i>0;i--)printf("%d ",cd[i]);

    return 0;
}