#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    
    int arr[n];
    
    for(int i=0;i<n;i++)
    cin >> arr[i];
    
    int val;
    cin >> val;
    
    int i=0,j=n-1;
    
    while(i<j)
    {
        if(arr[i]+arr[j]==val)
        {
            cout<<i<<" "<<j;
            return;
        }
        else if(arr[i]+arr[j]<val)
        i++;
        else
        j--;
    }
    
}