#include<bits/stdc++.h> using namespace std; const int N=1e5+10; int n,m,l1,l2,a[N],b[N],i; int main(){ cin>>n>>m; for(i=1;i<=n;i++){ cin>>a[i]; } for(i=1;i<=m;i++){ cin>>b[i]; } sort(a+1,a+n+1); sort(b+1,b+m+1); l1=1; l2=1; while(l1<=n&&l2<=m){ if(a[l1]==b[l2]){ cout<<b[l2]<<' '; l2++; }else if(b[l2]>a[l1]){ l1++; }else if(a[l1]>=b[l2]){ l2++; } } }