#include
using namespace std;
void all_indices(int *a,int n,int i,int j,int key,int *out){
if (i==n){
return ;
}
if (a[i]==key){
out[j]=i;
all_indices(a,n,i+1,j+1,key,out);
}
all_indices(a,n,i+1,j,key,out);
}
int main() {
int n,a[100005],out[100005]={0},key;
cin>>n;
for (int i=0;i<n;i++){
cin>>a[i];
}
cin>>key;
all_indices(a,n,0,0,key,out);
for (int p=0; p<2;p++ ){
cout<<out[p]<<" ";
}
return 0;
}