//Problema Militarilor
#include <fstream>
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int a[101][101], di[101], n, i, j, m;
void citire()
{int i, u, v;
 fin>>n>>m;
 for(i=1;i<=n;i++)
    {fin>>u>>v;
     a[u][v]=1;
     di[v]++;
    }
}
int main()
{int k;
 citire();
 for(k=1;k<=n;k++)
    {for(i=1;i<=n;i++)
        if(di[i]==0)
            {fout<<i<<" ";
             for(j=1;j<=n;j++)
                if(a[i][j]==1)
                    di[j]--;
             di[i]=-1;
             break;
            }
    }
return 0;
}