样例都过了，提交就全错

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll n,a,ans;
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    while(n--){
        cin>>a;
        while(a%2==0){
            ans++;
            a/=2;
        }
    }
    cout<<ans;
    return 0;
}