#include<stdio.h>
int n,m,i,j,a,b,k,t,l[100001],w[50001],g[50001],q[50001];
int main() {
	freopen("sortaret.in","r",stdin),freopen("sortaret.out","w",stdout),scanf("%d%d",&n,&m);
	for(i=1;i<=m;i++)
		scanf("%d%d",&a,&b),w[a]++;
	for(i=1;i<=n;i++)
		w[i]+=w[i-1];
	fclose(stdin);
	freopen("sortaret.in","r",stdin),scanf("%d%d",&n,&m);
	for(i=1;i<=m;i++) {
		scanf("%d%d",&a,&b);
		q[a]++;
		l[w[a-1]+q[a]]=b;
		g[b]++;
	}
	for(i=1;i<=n;i++)
		q[i]=0;
	for(i=1;i<=n;i++)
        if(!g[i])
			q[++q[0]]=i;
	for(i=1;i<=q[0];i++) {
		t=q[i],printf("%d ",t);
		for(j=w[t-1]+1;j<=w[t];j++) {
			g[l[j]]--;
			if(!g[l[j]])
				q[++q[0]]=l[j];
		}
	}
	return 0;
}