#include <iostream> using namespace std; int main(){ char a[205] = {0}; int m,n,x,cnt=0; cin>>m>>n; for(int i=0; i<m; i++){ cin>>x; a[x] = 1; } for(int j=0; j<n; j++){ cin>>x; if(a[x] == 1) { cout<<x<<" "; cnt++; } } if(cnt == 0) cout<<-1; return 0; }