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#include<stdio.h>
#include<stdlib.h>
int n,i,j,k,m,c[50001],*g[50001],a[100002],b[100002],w[50001],v[50001],t;
int C(int g[50001],int n,int x) {
for(int i=0;i<n;i++)
if(g[i]==x)
return 1;
return 0;
}
void E(int i) {
c[i]=1;
for(int j=w[i]-1;j>=0;j--)
if(!c[g[i][j]])
E(g[i][j]);
v[++t]=i;
}
int main() {
freopen("sortaret.in","r",stdin),freopen("sortaret.out","w",stdout),scanf("%d%d",&n,&m);
for(k=1;k<=m;k++)
scanf("%d%d",&a[k],&b[k]),w[a[k]]++;
for(i=1;i<=n;w[i++]=0)
g[i]=(int*)malloc(w[i]*sizeof(int));
for(k=1;k<=m;k++)
if(!C(g[a[k]],w[a[k]],b[k]))
g[a[k]][w[a[k]]++]=b[k];
for(i=1;i<=n;i++)
if(!c[i])
E(i);
for(j=n;j;j--)
printf("%d ",v[j]);
}