Differences

input/code.cpp: In function 'int main()':
input/code.cpp:20:10: error: expected ')' before ';' token
 sort(arr2;arr2+a);
          ^
input/code.cpp:20:17: error: expected ';' before ')' token
 sort(arr2;arr2+a);
                 ^
input/code.cpp:20:15: warning: statement has no effect [-Wunused-value]
 sort(arr2;arr2+a);
           ~~~~^~

#include<iostream>
#include<algorithm>

using namespace std;
int main()
{
	int a=0;
	cin>>a;
	int arr[a];
for (int i=0; i<a; i++){
	int b;
	std::cin>>b;
	arr[i]=b;}
std::sort(arr, arr + a);
int arr2[a];
for (int ii=0; ii<a; ii++){
	int bc;
	std::cin>>bc;
	arr2[ii]=bc;}
sort(arr2;arr2+a);
int v=0;
for(int ib=0; ib<a; ib++){
	v+=abs(arr[ib]-arr2[ib]);}
std::cout<<v;
	
	return 0;
}