➤  Problem Link : 1201C. Maximum Median  
✅ C++ Solution :
 
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
bool f(int v,ll arr[],int n,int k)
{
	int x=n/2;
	ll val=0;
	for(int i=x;i<n && arr[i]<v;i++)
	{
		val+=v-arr[i];
		if(val>k)
			return false;
	}
	if(val>k)
		return false;
	return true;
}
int main()
{
	ll n,k;
	cin>>n>>k;
	ll arr[n];
	for(int i=0;i<n;i++)
		cin>>arr[i];
	sort(arr,arr+n);
	int x=n/2;
	ll low=arr[x];
	ll high=low+k+1;
    ll mid;
	while(low<high)	 
	{
		mid=low+(high-low+1)/2;
		if(f(mid,arr,n,k))
			low=mid;
		else
		    high=mid-1;
	}
	cout<<high;
}
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