$\color{#1c1c1c}{\text{tu}}$$\color{#363636}{\text{a}}$$\color{#4f4f4f} {\text{n}}$$\color{#696969}{\text{d}}$$\color{#828282} {\text{u}}$$\color{#9c9c9c}{\text{n}}$$\color{#b5b5b5} {\text{m}}$$\color{#cfcfcf}{\text{a}}$$\color{#eee9e9}{\text{i}}$

#include<bits/stdc++.h>
using namespace std;
const int N=1e5;
long long a[N+5];
int main(){
    int  n,s=0;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        if(a[i]%2==0)
            s=s+a[i];
    }
    cout<<s;
    return 0;
}

`\color{blue}{team} \color{black}{manh} \color{blue}{đô} \color{black}{ng}`

`color(#FFFFFFff)(H)color(#E7E7E7ff)(o)color(#CFCFCFff)(r)color(#B7B7B7ff)(i)color(#9F9F9Fff)(z)color(#878787ff)(o)color(#6F6F6Fff)(n)`

#include <iostream>
using namespace std;

int main() {
    int n, s = 0; cin >> n; int a[n];
    for (auto& i:a) cin >> i;
    for (auto i:a) if (i % 2 == 0) s += i;
    cout << s;
}