Giúp mình với ạ giải bằng ngôn ngữ C++

#include <bits/stdc++.h>

using namespace std;

long long n,a[1000005];
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++) cin>>a[i];
    sort(a+1,a+n+1); 
    for(int i=1;i<=n;i++) cout<<a[i]<<" ";
}

$\color{#1fdb91}{\texttt{C}}\color{#0aaec9}{\texttt{+}}\color{#e9418e}{\texttt{+}}$

#include <bits/stdc++.h>

#define ll long long

using namespace std;

int main() {
    
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    
    ll n, ai; cin >> n;
    multiset<ll> ms;
    
    for (ll i=1; i<=n; ++i) cin >> ai, ms.insert(ai);
    
    for (ll i:ms) cout << i << ' ';
    
}

$\\$
\begin{array}{c|c|c}\color{#ffd710}{\texttt{\{}} \color{#8655d6}{\texttt{\{}}\ \ \color{#8cdcda}{\text{Daoanhviet96}}\ \ \color{#8655d6}{\texttt{\}}} \color{#ffd710}{\texttt{\}}}\end{array}