From 98e0db0799872dec30b2ec741aa66c854e5aa73b Mon Sep 17 00:00:00 2001
From: ShazidMahsrafi <shazid456@gmail.com>
Date: Tue, 16 Jan 2024 23:04:28 +0600
Subject: [PATCH] added 1921D

---
 Codes/1921 D - Very Different Array/1921D.cpp | 94 +++++++++++++++++++
 Readme.md                                     |  3 +-
 2 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 Codes/1921 D - Very Different Array/1921D.cpp

diff --git a/Codes/1921 D - Very Different Array/1921D.cpp b/Codes/1921 D - Very Different Array/1921D.cpp
new file mode 100644
index 0000000..2c00a8c
--- /dev/null
+++ b/Codes/1921 D - Very Different Array/1921D.cpp	
@@ -0,0 +1,94 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+#define FAST_IO             (ios_base:: sync_with_stdio(false),cin.tie(NULL));
+
+#define int                 long long
+#define ll                  long long
+#define ull                 unsigned long long
+#define endl                '\n'
+#define ff                  first
+#define ss                  second
+#define pb                  push_back
+#define all(x)              x.begin(), x.end()
+#define sz(x)               (int)(x).size()
+
+#define yes                 cout<<"YES"<<endl
+#define no                  cout<<"NO"<<endl
+#define neg1                cout<<-1<<endl
+
+#define PI                  3.141592653589793238
+#define MIN                 INT_MIN
+#define MAX                 INT_MAX
+#define INF                 LONG_LONG_MAX
+#define MOD                 1000000007
+#define LLM                 1000000000000000007
+
+ll factorial(ll n)              { if(n==0) return 1; ll res = 1; for (ll i = 2; i <= n; i++) res = res * i; return res; }
+ll nPr(ll n, ll r)              { return factorial(n) / factorial(n - r); }
+ll nCr(ll n, ll r)              { return factorial(n) / (factorial(r) * factorial(n - r));}
+ll gcd(ll a, ll b)              { if (b == 0) return a; return gcd(b, a % b); }
+ll lcm(ll a, ll b)              { return (a * b) / gcd(a, b);}
+ull mypow(ull a, ull b)         { ull ans = 1; a%=MOD; while(b){ if (b&1) ans = (ans*a) % MOD; a = (a*a) % MOD; b >>= 1; } return ans; }
+bool isPrime(ll n)              { if(n <= 1) return false; for(ll i = 2; i*i <= n; i++) if(n % i == 0) return false; return true; }
+
+#ifndef ONLINE_JUDGE
+#define dbg(x) cerr << #x <<" "; _print(x); cerr << endl;
+#define dbgin(x) cerr << #x <<" "; _print(x); cerr << ";"<<endl;
+#else
+#define dbg(x)
+#define dbgin(x)
+#endif
+
+void _print(int t) {cerr << t;}void _print(string t) {cerr << t;}void _print(char t) {cerr << t;}
+void _print(long double t) {cerr << t;}void _print(double t) {cerr << t;}void _print(unsigned ll t) {cerr << t;}
+template <class T, class V> void _print(pair <T, V> p);
+template <class T> void _print(vector <T> v);template <class T> void _print(set <T> v);
+template <class T, class V> void _print(map <T, V> v);template <class T> void _print(multiset <T> v);
+template <class T, class V> void _print(pair <T, V> p) {cerr << "{"; _print(p.first); cerr << ","; _print(p.second); cerr << "}";}
+template <class T> void _print(vector <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
+template <class T> void _print(set <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
+template <class T> void _print(multiset <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
+template <class T> void _print(unordered_set <T> v) {cerr<<"[ "; for(T i : v) {_print(i); cerr<<" ";} cerr<<"]";}
+template <class T, class V> void _print(map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
+template <class T, class V> void _print(multimap <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";} 
+template <class T, class V> void _print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
+/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+void solve()
+{
+    int n,m;
+    cin>>n>>m;
+    vector<int>a(n),b(m);
+    for(int &i:a)   cin>>i;
+    for(int &i:b)   cin>>i;
+    sort(all(a));
+    sort(all(b));
+    int ans=0;
+    int la=0,ra=n-1,lb=0,rb=m-1;
+    while(la<=ra)
+    {
+        int l=abs(a[la]-b[rb]);
+        int r=abs(a[ra]-b[lb]);
+        if(l>=r)
+        {
+            ans += l;
+            la++,rb--;
+        }
+        else
+        {
+            ans += r;
+            ra--, lb++;
+        }
+    }
+    cout<<ans<<endl;
+}
+
+int32_t main()
+{
+    FAST_IO;
+    int TC = 1;
+    cin >> TC;
+    while (TC--) 
+        solve();
+}
\ No newline at end of file
diff --git a/Readme.md b/Readme.md
index 8d30420..9a843ba 100644
--- a/Readme.md
+++ b/Readme.md
@@ -243,7 +243,8 @@ This repository contains my solutions of Codeforces problems. They are in C++ la
 | 231 | 1921 A | Square | [Question](https://codeforces.com/problemset/problem/1921/A) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1921%20A%20-%20Square)
 | 232 | 1921 B | Arranging Cats | [Question](https://codeforces.com/problemset/problem/1921/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1921%20B%20-%20Arranging%20Cats)
 | 233 | 1921 C | Sending Messages | [Question](https://codeforces.com/problemset/problem/1921/C) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1921%20C%20-%20Sending%20Messages)
-| 234 | 19020 B | Summation Game | [Question](https://codeforces.com/problemset/problem/19020/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/19020%20B%20-%20Summation%20Game)
+| 234 | 1921 D | Very Different Array | [Question](https://codeforces.com/problemset/problem/1921/D) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/1921%20D%20-%20Very%20Different%20Array)
+| 235 | 19020 B | Summation Game | [Question](https://codeforces.com/problemset/problem/19020/B) | [Solution](https://github.com/ShazidMashrafi/Codeforces-Solutions/tree/master/Codes/19020%20B%20-%20Summation%20Game)