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