import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;

public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        String[] line = br.readLine().split(" ");
        if(line.length != n)    System.exit(1);
        long[] a = new long[n];
        for(int i = 0; i < n; i++)  a[i] = Long.parseLong(line[i]);
        int[] gt = new int[n];  gt[0] = 0;
        int[] lt = new int[n];  lt[0] = 0;
        for(int i = 1; i < n; i++){
            if(a[i-1] <= a[i])  gt[i] = 1;
            if(a[i-1] >= a[i])  lt[i] = 1;
            gt[i] += gt[i-1];
            lt[i] += lt[i-1];
        }
        int q = Integer.parseInt(br.readLine());
        for(int i = 0; i < q; i++){
            line = br.readLine().split(" ");
            int l = Integer.parseInt(line[0]), r = Integer.parseInt(line[1]);
            boolean asc = (gt[r]-gt[l] == r-l);
            boolean dec = (lt[r]-lt[l] == r-l);
            int ans = 2;
            if(asc && dec)  ans = 0;
            else if(asc)    ans = 1;
            else if(dec)    ans = -1;
            System.out.println(ans);
        }
    }
}