Envío 2263

Código

#include <bits/stdc++.h>
#define ii              pair<int,int>
#define F               first
#define S               second
#define pb              push_back
#define all(x)          (x).begin(),(x).end()
#define rall(x)         (x).rbegin(),(x).rend()
#define fore(i, a, b)   for(int i = a; i < b; i += 1)
#define forr(i, a)      for(int i = a; i >= 0; i--)
#define sz(s)           int(s.size())
#define cls(a,car)      memset(a,car,sizeof (a))
#define db(x)           cout << #x << " is " << x << '\n'
#define angle(x)        double(x * acos(-1) / 180.0)
using namespace std;
void debug(){cout << endl;}
template<typename T, typename... Args>
void debug(T a, Args... args){cout << a << " "; debug(args...);}
typedef long long   ll;
typedef vector<int> vi;
typedef vector<ii>  vii;
const int N = 2e5 + 5;
const ll mod = 1e9 + 7;
const double E = 1e-7;
const int oo = 1e9;

void merge_sort(int l, int r, vector<int> &v){
    if(l == r)return;
    int mid = (l + r) >> 1;
    merge_sort(l, mid, v);
    merge_sort(mid + 1, r, v);
    queue<int> L, R;
    for(int i = l; i <= mid; i ++)
        L.push(v[i]);
    for(int i = mid + 1; i <= r; i++)
        R.push(v[i]);

    for(int i = l; i <= r; i++){
        if(!sz(L)){
            v[i] = R.front();
            R.pop();
        }else if(!sz(R)){
            v[i] = L.front();
            L.pop();
        }else{
            if(R.front() <= L.front()){
                v[i] = R.front();
                R.pop();
            }else{
                v[i] = L.front();
                L.pop();
            }
        }
    }
}
void solve(){
    int n;
    cin >> n;
    vi v(n);
    for(auto &i : v)cin >> i;
    merge_sort(0, n - 1, v);
    cout << v[0];
    for(int i = 1; i < n; i++)
        cout << ' ' << v[i];
    cout << '\n';
}
int main(){
    #ifdef LOCAL
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #else
       ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #endif

    int t = 1;
    //cin >> t;
    for(int i = 1; i <= t; i++)
        solve();

    #ifdef LOCAL
        cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
    #endif
    return 0;
}