êu giúp vơi mọi người xin đó xin mà

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

#include <bits/stdc++.h>

using namespace std;

int main() {
    
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    
    int n, m; cin >> n >> m;
    multiset<int> ms;
    
    for (int i=1; i<=m; ++i) {
        int tmp; cin >> tmp;
        ms.insert(tmp);
    }
    
    for (int i=1; i<=n-m; ++i) {
        int mx = *ms.rbegin();
        ms.erase(ms.find(mx));
        ms.insert(mx/2);
        ms.insert(mx-mx/2);
    }
    
    cout << *ms.rbegin();
    
}

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