#include <iostream>
#include <fstream>
#include <climits>
#include <vector>
using namespace std;
vector<vector<int> > a(50000);
int dp[50001],viz[50001];
int n,m;
int main()
{
    FILE *f=fopen("sortaret.in","r");
    FILE *g=fopen("sortaret.out","w");
    fscanf(f,"%d %d",&n,&m);
    for(int i=1;i<=m;i++)
    {
        int x1,x2;
        fscanf(f,"%d %d",&x1,&x2);
        a[x1].push_back(x2);
        dp[x2]++;
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
            if(viz[j]==0 && dp[j]==0)
        {
            viz[j]=1;fprintf(g,"%d ",j);
            for(int y=0;y<a[j].size();y++)
                dp[a[j][y]]--;
            break;
        }
    }
    return 0;
}