#include <bits/stdc++.h>
using namespace std;
int main(){
int n,d=0,a[100000];
cout<<"Nhap so luong phan tu: "; cin>>n;
for (int i=1;i<=n;i++){
cout<<"Phan tu thu "<<i<<": "; cin>>a[i];
if (a[i]<0) d++;
}
cout<<"Ket qua: "<<d<<"\n";
}
#include <bits/stdc++.h>
using namespace std;
int main(){
int n,s=0,a[100000];
cout<<"Nhap so luong phan tu: "; cin>>n;
for (int i=1;i<=n;i++){
cout<<"Phan tu thu "<<i<<": "; cin>>a[i];
if (a[i]%2==0) s=s+a[i];
}
cout<<"Ket qua: "<<s<<"\n";
}