Problem:
Equal Range

For a given sequence $A = \{a_0, a_1, ..., a_{n-1}\}$ which is sorted by ascending order, print a pair of the lower bound and the upper bound for a specific value $k$ given as a query.

lower bound: the place pointing to the first element greater than or equal to a specific value, or $n$ if there is no such element.

upper bound: the place pointing to the first element greater than a specific value, or $n$ if there is no such element.

Input

The input is given in the following format.

$n$
$a_0 \; a_1 \; ,..., \; a_{n-1}$
$q$
$k_1$
$k_2$
:
$k_q$

The number of elements $n$ and each element $a_i$ are given in the first line and the second line respectively. In the third line, the number of queries $q$ is given and the following $q$ lines, $q$ integers $k_i$ are given as queries.

Output

For each query, print the pari of the lower bound $l$ ($l = 0, 1, ..., n$) and upper bound $r$ ($r = 0, 1, ..., n$) separated by a space character in a line.

Constraints

$1 \leq n \leq 100,000$

$1 \leq q \leq 200,000$

$0 \leq a_0 \leq a_1 \leq ... \leq a_{n-1} \leq 1,000,000,000$

$0 \leq k_i \leq 1,000,000,000$

Sample Input 1

4
1 2 2 4
3
2
3
5

Sample Output 1

1 3
3 3
4 4

Solution in JAVA (judge verdict: Accepted)

import java.util.*;
// import java.io.*;
// import java.time.*;

public class Main {
    static StringBuilder sb;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        sb = new StringBuilder();

        int num = sc.nextInt();

        ArrayList<Integer> array = new ArrayList<>();
        for (int i = 0; i < num; i++) {
            array.add(sc.nextInt());
        }

        int query = sc.nextInt();

        for (int i = 0; i < query; i++) {
            int key = sc.nextInt();
            int lower_bound = LowerBound(array, key);
            if (lower_bound < 0) sb.append(num).append(" ");
            else sb.append(lower_bound).append(" ");
            int upper_bound = UpperBound(array, key);
            if (upper_bound < 0) sb.append(num).append("\n");
            else sb.append(upper_bound).append("\n");
        }

        System.out.print(sb);
        
        sc.close();
    }

    public static int LowerBound(List<Integer> list, int key) {
        int lower = -1;
        int middle = -1;
        int upper = list.size();

        while (upper > lower + 1) {
            middle = lower + (upper - lower) / 2;
            if (list.get(middle) > key - 1) upper = middle;
            else lower = middle;
        }

        return upper;
    }

    public static int UpperBound(List<Integer> list, int key) {
        int lower = -1;
        int middle = -1;
        int upper = list.size();

        while (upper > lower + 1) {
            middle = lower + (upper - lower) / 2;
            if (list.get(middle) > key) upper = middle;
            else lower = middle;
        }

        return upper;
    }
}