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# Concat Sort CodeChef Solution

## Concat Sort CodeChef Solution in C++17

``````// Problem Link -
/* By Navneet Shukla*/
#include<bits/stdc++.h>
//#include<ext/pb_ds/assoc_container.hpp>
//using namespace __gnu_pbds;
using namespace std;
#define ll 				long long int
#define ld				long double
#define mod             1000000007
#define inf             1e18
#define endl			"\n"
#define pb 				emplace_back
#define vi              vector<ll>
#define vs				vector<string>
#define pii             pair<ll,ll>
#define ump				unordered_map
#define mpa 				make_pair
#define pq_max          priority_queue<ll>
#define pq_min          priority_queue<ll,vi,greater<ll> >
#define ff 				first
#define ss 				second
#define mid(l,r)        (l+(r-l)/2)
#define loop(i,a,b) 	for(int i=(a);i<=(b);i++)
#define looprev(i,a,b) 	for(int i=(a);i>=(b);i--)
#define log(args...) 	{ string _s = #args; replace(_s.begin(), _s.end(), ',', ' '); stringstream _ss(_s); istream_iterator<string> _it(_ss); err(_it, args); }
#define logarr(arr,a,b)	for(int z=(a);z<=(b);z++) cout<<(arr[z])<<" ";cout<<endl;
#define token(str,ch)	(std::istringstream var((str)); vs v; string t; while(getline((var), t, (ch))) {v.pb(t);} return v;)
vs tokenizer(string str,char ch) {std::istringstream var((str)); vs v; string t; while(getline((var), t, (ch))) {v.pb(t);} return v;}

void err(istream_iterator<string> it) {}
template<typename T, typename... Args>
void err(istream_iterator<string> it, T a, Args... args) {
cout << *it << " = " << a << endl;
err(++it, args...);
}
//typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> pbds;

void file_i_o()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}

int modularExponentiation(int x,int n,int M)
{
if(n==0)
return 1;
else if(n%2 == 0)        //n is even
return modularExponentiation((x*x)%M,n/2,M);
else                             //n is odd
return (x*modularExponentiation((x*x)%M,(n-1)/2,M))%M;

}

int main(int argc, char const *argv[]) {
file_i_o();
int t;
cin>>t;
while(t--)
{
int n;
cin>>n;
int m[n],m1[n];
loop(i,0,n-1)
{
cin>>m[i];
m1[i]=m[i];
}
sort(m1,m1+n);
int c=0;
int i=0,j=0;
while(i<n and j<n)
{
if(m1[i]==m[j])
{
i++;
j++;
c++;
}
else j++;
}
j=0;
while(i<n and j<n)
{
if(m1[i]==m[j])
{
i++;
j++;
c++;
}
else j++;
}
if(c==n) cout<<"YES"<<endl;
else cout<<"NO"<<endl;

}
return 0;
}``````

## Concat Sort CodeChef Solution in C++14

``````
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mod 1000000007
#define Time cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " secs" << endl;
#define pb push_back
#define mp make_pair
#define line cout << endl;
#define ff first
#define ss second
#define vi vector<int>
#define no cout << "NO" << endl;
#define yes cout << "YES" << endl;
#define printv(v)                      \
for (int i = 0; i < (v.size()); i++) \
{                                    \
cout << v[i] << " ";               \
}                                    \
line;
#define onesbits(x) __builtin_popcountll(x)
#define zerobits(x) __builtin_ctzll(x)
#define sp(x, y) fixed << setprecision(y) << x
#define w(x) \
int x;     \
cin >> x;  \
while (x--)
#define tk(x) \
int x;      \
cin >> x;
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#ifndef ONLINE_JUDGE
#define debug(x)     \
cerr << #x << " "; \
_print(x);         \
cerr << endl;
#else
#define debug(x)
#endif
template <class T>
void _print(T t)
{
cerr << t;
}

template <class T, class V>
void _print(pair<T, V> p)
{
cerr << "{";
_print(p.ff);
cerr << ",";
_print(p.ss);
cerr << "}";
}

template <class T>
void _print(vector<T> v)
{
cerr << "[ ";
for (T i : v)
{
_print(i);
cerr << " ";
}
cerr << "]";
}

template <class T>
void _print(vector<vector<T>> v)
{
cerr << "[\n";
for (int l = 0; l < v.size(); l++)
{
{
for (int k = 0; k < v[l].size(); k++)
cerr << v[l][k] << " ";
}
cerr << "\n";
}
cerr << "]";
}

template <class T, class V>
void _print(map<T, V> v)
{
cerr << "[ ";
for (auto i : v)
{
_print(i);
cerr << " ";
}
cerr << "]";
}

template <class T>
void _print(set<T> v)
{
cerr << "[ ";
for (T i : v)
{
_print(i);
cerr << " ";
}
cerr << "]";
}

const long long inf = 1e18;
const int MOD = 1e9 + 7;
const int MAX = 1e6;

int numbit(int x)
{
int ans = 0;
while (x > 0)
{
x = x >> 1;
ans++;
}
return ans;
}

int setbit(int x)
{
int ans = 0;
while (x > 0)
{
if (x & 1)
{
ans++;
}
x = x >> 1;
}
return ans;
}

bool isValid(string s)
{
int len = s.size();
for (int i = 0; i < len / 2; i++)
{
if (s[i] != s[len - 1 - i])
return false;
}
return true;
}

void rotateMatrix(vector<vector<int>> &v, int n)
{
for (int i = 0; i < n / 2; i++)
{
for (int j = i; j < n - i - 1; j++)
{
int ptr = v[i][j];
v[i][j] = v[n - 1 - j][i];
v[n - 1 - j][i] = v[n - 1 - i][n - 1 - j];
v[n - 1 - i][n - 1 - j] = v[j][n - 1 - i];
v[j][n - 1 - i] = ptr;
}
}
}

vector<bool> is_prime(10001, 1);
vector<int> primes;

void seive()
{
is_prime[0] = 0;
is_prime[1] = 0;
for (int i = 2; i < 10001; i++)
{
if (is_prime[i])
{
primes.push_back(i);
for (int j = i + i; j < 10001; j += i)
{
is_prime[j] = 0;
}
}
}
}

ll expo (ll x,ll n){
ll result=1;
while (n) {
if (n & 1)
result = result * x % MOD;
n = n / 2;
x = x * x % MOD;
}
return result;
}

int32_t main() {
ll t; cin >> t;
// seive();
while (t--) {
ll n,m; cin>>n;
ll a[n],p[n];
for (ll i = 0; i <n; i++){
cin>>a[i];
p[i]=a[i];
}

sort(p,p+n);

ll cnt=0,j=0;

for (ll i = 0; i <n; i++)
{
/* code */
if(p[j]==a[i]){
j++;
a[i]=-1;
}
}

for (ll i = 0; i <n; i++)
{
/* code */
if(j==n) break;
if(p[j]==a[i]){
j++;
a[i]=-1;
}
}

if(j==n){
yes
}else no

// for (ll i = 0; i <n; i++)
// {
//   /* code */

//   cout<<a[i]<< " ";
// }

// cout<<endl;

}
return 0;
}

// 1b 4d``````

## Concat Sort CodeChef Solution in PYTH 3

``````# cook your dish here
for _ in range(int(input())):
n=int(input())
nli=list(map(int,input().split()))
srtli=list()
srtli+=nli
srtli.sort()
pli=list()
qli=list()
ind_srt=0
for a in nli:
if srtli[ind_srt]==a:
pli.append(a)
ind_srt+=1
else:
qli.append(a)
pq=pli+qli
if srtli==pq:
print('YES')
else:
print('NO')
``````

## Concat Sort CodeChef Solution in C

``````#include <stdio.h>
#include <stdlib.h>
long int cmpfn (const void * a, const void * b) {
return ( *(long int*)a - *(long int*)b );
}

int main(void) {
int t;
scanf("%d", &t);
long int arr1[100001];
long int brr[100001];
long int arr2[100001];
long int arr3[100001];
while(t--){
int n;
scanf("%d", &n);
for(int i = 0; i < n; i++){
scanf("%ld", &arr1[i]);
brr[i] = arr1[i];
}
qsort(brr, n, sizeof(long int), cmpfn);
int j = 0;
int k = 0;
int check = 0;
int l = 0;
for(int i = 0; i < n; i++){
if(arr1[i] == brr[l]){
arr2[j] = arr1[i];
l++;
j++;
}else{
if(k != 0 && arr3[k - 1] > arr1[i]){
printf("No\n");
check = 1;
break;
}
arr3[k] = arr1[i];
k++;
}
}
if(k == 0){
arr3[0] = 1000000001;
}
if(check == 1){
continue;
}
if(j + k == n){
if(arr3[0] >= arr2[j - 1]){
printf("Yes\n");
}else{
printf("No\n");
}
}else{
printf("No\n");
}
}
return 0;
}
``````

## Concat Sort CodeChef Solution in JAVA

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

class Codechef{

static class FastScanner{
StringTokenizer st;

public FastScanner(){
}

String next(){
while (st == null || !st.hasMoreElements()){
try{
}
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{
}
catch (IOException e){
e.printStackTrace();
}
return str;
}
}

public static void main (String[] args) throws java.lang.Exception{
FastScanner sc = new FastScanner();
PrintWriter out = new PrintWriter(System.out);
int a = sc.nextInt();
while(a-->0){
solve(sc);
}
}

public static void solve(FastScanner sc){
int len = sc.nextInt();
int arr[] = new int[len];
int arr1[] = new int[len];

for(int i=0;i<len;i++){
arr[i] = sc.nextInt();
arr1[i] = arr[i];
}

Arrays.sort(arr1);

List<Integer> list = new ArrayList<>();
List<Integer> list1 = new ArrayList<>();
int i=0;
int j=0;

while(i != len && j != len){
if(arr[i] == arr1[j]){
i++;
j++;
}else{
while( i != len && arr[i] != arr1[j] ){
i++;
}
}
}

boolean isa = true;

for(int k=0;k<len;k++){
if( arr1[k] != list1.get(k) ){
System.out.println("NO");
isa = false;
break;
}
}

if(isa){
System.out.println("YES");
}
}
}``````

## Concat Sort CodeChef Solution in PYPY 3

``````from sys import stdin

from math import ceil, floor, sqrt, log2
from heapq import heappush, heappop
from collections import deque
from functools import lru_cache
from bisect import bisect_left, bisect_right

def rl(t = int):
return list(map(t, input().split()))

T = int(input())

for t in range(1, T + 1):
n = int(input())
a = rl()
sa = sorted(a)
used = set()
ua = []
si = 0

for i,el in enumerate(a):
if el == sa[si]:
si += 1
ua.append(el)

res = ua + [el for i,el in enumerate(a) if i not in used]
print("YES" if res == sa else "NO")``````

## Concat Sort CodeChef Solution in PYTH

``````class ConcatS:
def __init__(self, n, v):
self.n = n
self.v = v

def solve(self):
if self.n == 2:
return 'YES'
idx = -1
vc = -1
for i in range(0, self.n - 1):
if self.v[i] > self.v[i + 1]:
idx = i + 1
vc = self.v[idx]
break

if idx == -1 or idx == self.n - 1:
return 'YES'
for i in range(0, idx):
if self.v[i] > vc:
left_max = self.v[i]
break
right = self.v[idx - 1]
i = idx + 1
while i < self.n:
if self.v[i] >= right:
right = self.v[i]
elif self.v[i] <= left_max and self.v[i] >= vc:
vc = self.v[i]
else:
return 'NO'
i += 1
if i == self.n:
return 'YES'
else:
return 'NO'

def main():
t = int(raw_input())
while t > 0:
t -= 1
n = int(raw_input())
v = [int(a) for a in raw_input().split()]
ob = ConcatS(n, v)
print ob.solve()

if __name__ == '__main__':
main()``````

## Concat Sort CodeChef Solution in C#

``````using System;
using System.Collections.Generic;

public class Test
{
public static void Main()
{
for (int tt=0; tt<t; tt++){
int[] a = Array.ConvertAll(s, int.Parse);
int[] b = Array.ConvertAll(s, int.Parse);
Array.Sort(b);
int bi=0;

List<int> p = new List<int>();
List<int> q = new List<int>();

for(int i=0; i<n; i++){
if(a[i]==b[bi]){
bi++;
}
else
{
}
}

string rez="YES";
for(int i=0; i<n; i++){
if (b[i]!=p[i]){
rez="NO";
break;
}
}

Console.WriteLine(rez);
}
}
}``````

## Concat Sort CodeChef Solution in GO

``````package main

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

func main() {

var buf bytes.Buffer
for tc > 0 {
tc--
res := solve(A)

if res {
buf.WriteString("YES\n")
} else {
buf.WriteString("NO\n")
}
}
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
}

func index(x, y int) int {
if x > 0 && y > 0 {
return 0
}
if x > 0 && y < 0 {
return 1
}
if x < 0 && y < 0 {
return 2
}
return 3
}

func solve(A []int) bool {
n := len(A)

for i := 0; i+1 < n; i++ {
if A[i] <= A[i+1] {
continue
}

// A[i] > A[i+1]
// first one that > A[i+1]  in the left part
var j int
for j <= i && A[j] <= A[i+1] {
j++
}
// A[j] is the first number greater than A[i+1] in left
a := i
b := i + 1
for k := b + 1; k < n; k++ {
if A[k] >= A[a] {
a = k
continue
}
if A[k] >= A[b] {
b = k
continue
}
return false
}
return A[b] <= A[j]
}

return true
}``````
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