Can Someone please post a code which has'nt used map data structure just had a logic .

Thanks in Advance!!1

Here is the Solutions in C++. For any queries please ping me-

#include<bits/stdc++.h>
using namespace std;
int main()
{
	map<long long int , int> mp;
	long int n1,n2,n3;
	cin>>n1>>n2>>n3;
	long long int k=n1+n2+n3;
	while(k--)
	{
		long long int x;
		cin>>x;
		mp[x]++;
 
	}
	std::map<long long int ,int>::iterator it;
	long long int size=0;
	for(it=mp.begin();it!=mp.end();it++)
	{
		if(it->second>=2)
		{
			it->second=-2;

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