除2！
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner in = new Scanner(System.in);
int n = in.nextInt(), k = in.nextInt();
PriorityQueue<Integer> heap = new PriorityQueue<>(
(a, b) -> {return b - a;});
long sum = 0, x;
for(int i = 0; i < n; i++){
x = in.nextLong();
sum += x;
if(x % 2 == 0){
heap.add((int)x);
}
}
while(!heap.isEmpty() && k-- != 0){
long t = heap.poll() / 2;
sum -= t;
if(t % 2 == 0){
heap.add((int)t);
}
}
System.out.println(sum);
}
}
