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

public class lightoj1088 {
    
    static int binarysearchlower(int[] arr, int key){
       int begin = 0;
        int end = arr.length - 1;
        int index = -1;
        while(begin<=end){
            int mid = (begin+end)/2;
            if(key <= arr[mid]){
                index = mid;
                end = mid - 1;
            }else if(key>arr[mid]){
                begin = mid + 1;
            }else{
                end = mid - 1;
            }
        }
        return index;
       
   }
    
   static int binarysearchupper(int[] arr, int key){
       int begin = 0;
        int end = arr.length - 1;
        int index = -1;
        while(begin<=end){
            int mid = (begin+end)/2;
            if(key >= arr[mid]){
                index = mid;
                begin = mid + 1;
            }else if(key>arr[mid]){
                begin = mid + 1;
            }else{
                end = mid - 1;
            }
        }
        return index;
       
   } 
   
   static class FastReader {
        BufferedReader br;
        StringTokenizer st;
  
        public FastReader()
        {
            br = new BufferedReader(
                new InputStreamReader(System.in));
        }
  
        String next()
        {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
  
        int nextInt() { return Integer.parseInt(next()); }
  
        long nextLong() { return Long.parseLong(next()); }
  
        double nextDouble()
        {
            return Double.parseDouble(next());
        }
  
        String nextLine()
        {
            String str = "";
            try {
                if(st.hasMoreTokens()){
                    str = st.nextToken("\n");
                }
                else{
                    str = br.readLine();
                }
            }
            catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
  
    
   public static void main(String[] args) throws IOException{
        FastReader s = new FastReader();
        
        int t = s.nextInt();
        int up, low, lowindex, upindex;
        for(int j=1;j<=t;j++){
            int n = s.nextInt();
            int q = s.nextInt();
            int[] arr = new int[n];
            for(int i=0;i<n;i++){
               arr[i] = s.nextInt();
            }
            System.out.println("Case "+j+":");
            for(int i=0;i<q;i++){
                low = s.nextInt();
                up = s.nextInt();
                
                lowindex = binarysearchlower(arr,low);
                upindex = binarysearchupper(arr,up);
                
//              System.out.println("Low index: "+lowindex+" Up index: "+upindex);
                System.out.println((upindex-lowindex)+1);
                
            }
            
        }
}