import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    }
} Main public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    } main {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N=sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] a=new int[N]; a new int[N] N int ans=0; ans 0 for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            a[i]=sc.nextInt();
            
        } {
            a[i]=sc.nextInt();
            
        } a[i]=sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		} int i = 0; int i = 0; i 0 i<N i N i++ i++ i {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		} {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		} while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			} a[i]%2 != 1 a[i]%2 a[i] a i 2 1 {
				ans++;
				a[i] /= 2;
			} ans++ ans a[i] /= 2 a[i] a i 2 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int N=sc.nextInt();
        int[] a=new int[N];
        
        int ans=0;
        
        
        for(int i=0;i<N;i++){
            a[i]=sc.nextInt();
            
        }
        for(int i = 0; i<N; i++) {
			while(a[i]%2 != 1) {
				ans++;
				a[i] /= 2;
			}
		}
        
        System.out.println(ans);
        
        
        
        
    }
}
