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