304 North Cardinal St.
Dorchester Center, MA 02124

# Chef and Interesting Subsequences CodeChef Solution

## Chef and Interesting Subsequences CodeChef Solution in C++14

``````#include <bits/stdc++.h>
#define int long long
using namespace std;
const int mod = 998244353;

int ncr[51][51]={-1};

int per(int l, int r) {
if (l==1) {
return r;
}
else if (l==r) {
return 1;
}
else if (ncr[l][r]!=-1) {
return ncr[l][r];
}
else {
return ncr[l][r]=per(l-1,r-1)+per(l,r-1);
}
}

signed main() {
int t;
cin >> t;
while (t--) {
int n,m;
cin>>n>>m;
vector <int> a(n);
for (int i = 0;i<n;i++)
cin >> a[i];
sort(a.begin(),a.end());
int cnt1 = 0,cnt2 = 0;
cnt2 = count(a.begin(),a.end(),a[m-1]);
for (int i = 0;i<51;i++) {
for (int j = 0;j<51;j++) {
ncr[i][j]=-1;
}
}
for (int i = m-1;i>=0;i--) {
if (a[m-1]!=a[i]) {
break;
}
else {
cnt1++;
}
}
int ans = per(cnt1,cnt2);
cout << ans << endl;
}
}``````

## Chef and Interesting Subsequences CodeChef Solution in PYTH 3

``````from math import factorial
i = int(input())
for _ in range(i):
a,b = map(int, input().split())
c = list(map(int, input().split()))
c.sort()
p=c[b-1]
f=c.count(p)
e=c[:b].count(p)
print(factorial(f)//(factorial(e)*factorial(f-e)))``````

## Chef and Interesting Subsequences CodeChef Solution in C

``````#include <stdio.h>
#include <stdlib.h>
long long c[55][55];
int cmp (const void *a, const void *b)
{
return *(int *)a - *(int *)b;
}
int main ()
{
int t, n, k, cnt, slot;
int data[50];
c[0][0] = 1;
for (int i = 1; i <= 50; i++)
{
c[i][0] = 1;
for (int j = 1; j <= i; j++)
{
c[i][j] = c[i-1][j-1] + c[i-1][j];
}
}
scanf("%d", &t);
while (t--)
{
scanf("%d %d", &n, &k);
for (int i = 0; i < n; i++)
{
scanf("%d", &data[i]);
}
qsort(data, n, sizeof(int), cmp);
slot=0;
cnt=0;
for (int i = 0; i < n; i++)
{
if (data[i] == data[k-1])
{
cnt++;
}
}
for (int i = 0; i < k; i++)
{
if (data[i] == data[k-1])
{
slot++;
}
}
printf("%lld\n", c[cnt][slot]);
}
return 0;
}``````

## Chef and Interesting Subsequences CodeChef Solution in JAVA

``````/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
Scanner sc = new Scanner(System.in);
int t = sc.nextInt();
while (t-- > 0) {
int n = sc.nextInt();
int k = sc.nextInt();
List<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < n; i++) {
}
Collections.sort(list);
int countOfMaxelem = 0, countInSubStr = 0;
int maxElem = list.get(k - 1);

for (int i = 0; i < n; i++) {
if (list.get(i) == maxElem) {
if(i < k) countInSubStr++;
countOfMaxelem++;
}else if(list.get(i) > maxElem){
break;
}
}
}
}

static long nCr(int n, int r) {
long result = 1;
for (int i = 0; i < r; i++) {
result = result * (n - i) / (i + 1);
}
return result;
}

}``````

## Chef and Interesting Subsequences CodeChef Solution in PYPY 3

``````
def integer_list():
return list(map(int, input().split()))

def string_list():
return list(map(str, input().split()))

def hetro_list():
return list(input().split())

import math
import sys
from collections import Counter

fact = [0]*51

fact[0] =  1
for i in range(1, 51):
fact[i] = (fact[i - 1] * i)

def main():
lst.sort()

seq = lst[:k]
dct2 = Counter(seq)
dct = Counter(lst)

ans = 1
for ele in dct2:
ele_req = dct2[ele]
ele_av = dct[ele]
ans *= fact[ele_av]//(fact[ele_req]*fact[ele_av - ele_req])
print(ans)

t = int(input())

for _ in range(t):
n, k = integer_list()
lst = integer_list()
main()``````

## Chef and Interesting Subsequences CodeChef Solution in PYTH

``````def nCr(n,r):
v = 1
if r > n:
v = 0
else:
k = n-r
if k < r:  # make k larger
r,k = k,r
# endif
while n > k:
v = v*n
n -= 1
# endwhile
while r > 1:
v = v/r
r -= 1
# endwhile
# endif
return v
# end fun
t = int(raw_input())
for i in xrange(t):
st = raw_input().split()
N = int(st[0])
K = int(st[1])
L = []
st = raw_input().split()
for k in st:
L.append(int(k))
# endfor k
L.sort()
v = L[-1]
L.append(v+1)
v = L[K-1]
cnt= 0
p = K
while L[p] == v:
cnt += 1
p += 1
# endwhile
a = 0
for p in range(K):
if L[p] == v:
a += 1
# endif
# endfor p
cnt += a
r = nCr(cnt,a)
print r
# endfor i
``````

## Chef and Interesting Subsequences CodeChef Solution in C#

``````using System;
using System.Linq;
using System.Numerics;

public class Test
{
public static void Main()
{
if (string.IsNullOrWhiteSpace(line))
return;

int testCases = 0;
if (!int.TryParse(line, out testCases))
return;

for(int i = 0; i < testCases; i++)
{
var paramaters = Array.ConvertAll(Console.ReadLine().Split(' '), e => int.Parse(e));
var sequence = Console.ReadLine().Split(' ').Select(e => int.Parse(e)).OrderBy(e => e).ToList();

int K = paramaters[1];

var sub_seq = sequence.Take(K).ToArray();
int max = sub_seq.Last();

int cnt = sequence.Where(s => s == max).Count();
int Y = sub_seq.Where(s => s == max).Count();

BigInteger result = Factorial(cnt) / (Factorial(Y) * Factorial(cnt - Y));
Console.WriteLine(result);
}
}

public static BigInteger Factorial(int n)
{
if (n == 1 || n == 0)
return new BigInteger(1);

return n * Factorial(n - 1);
}
}``````

## Chef and Interesting Subsequences CodeChef Solution in GO

``````package main

import (
"bufio"
"bytes"
"fmt"
"os"
"sort"
)

func main() {

var buf bytes.Buffer
for tc > 0 {
tc--
res := solve(A, k)
buf.WriteString(fmt.Sprintf("%d\n", res))
}
fmt.Print(buf.String())
}

func readUint64(bytes []byte, from int, val *uint64) int {
i := from

var tmp uint64
for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
tmp = tmp*10 + uint64(bytes[i]-'0')
i++
}
*val = tmp

return i
}

func readInt(bytes []byte, from int, val *int) int {
i := from
sign := 1
if bytes[i] == '-' {
sign = -1
i++
}
tmp := 0
for i < len(bytes) && bytes[i] >= '0' && bytes[i] <= '9' {
tmp = tmp*10 + int(bytes[i]-'0')
i++
}
*val = tmp * sign
return i
}

for i := 0; i < len(s); i++ {
if s[i] == '\n' || s[i] == '\r' {
return s[:i]
}
}
return s
}

return
}

a, b = res[0], res[1]
return
}

a, b, c = res[0], res[1], res[2]
return
}

res := make([]int, n)
x := 0
for i := 0; i < n; i++ {
for x < len(bs) && (bs[x] < '0' || bs[x] > '9') && bs[x] != '-' {
x++
}
}
return res
}

const N = 51

var C [N][N]int64

func init() {
C[0][0] = 1
for i := 1; i < N; i++ {
C[i][0] = 1
for j := 1; j <= i; j++ {
C[i][j] = C[i-1][j-1] + C[i-1][j]
}
}
}

func solve(A []int, k int) int64 {
n := len(A)
sort.Ints(A)
// sum must be the first k elements
x := A[k-1]
var i int
for i < n && A[i] < x {
i++
}
// A[i] == x
j := i
for j < n && A[j] == x {
j++
}
// A[j] > x
a := j - i
b := k - i
return C[a][b]
}``````
##### Chef and Interesting Subsequences CodeChef Solution Review:

In our experience, we suggest you solve this Chef and Interesting Subsequences CodeChef Solution and gain some new skills from Professionals completely free and we assure you will be worth it.

If you are stuck anywhere between any coding problem, just visit Queslers to get the Chef and Interesting Subsequences CodeChef Solution.

Find on CodeChef

##### Conclusion:

I hope this Chef and Interesting Subsequences CodeChef Solution would be useful for you to learn something new from this problem. If it helped you then don’t forget to bookmark our site for more Coding Solutions.

This Problem is intended for audiences of all experiences who are interested in learning about Programming Language in a business context; there are no prerequisites.

Keep Learning!