Dynamic Sensor Buffer

#include <iostream>

int main() {
    int n;
    std::cin >> n;

    if (n < 1) {
        return 0;
    }

    // Write your dynamic buffer allocation code here
    int* arr =  new int[n];
    for(int i=0;i<n;i++)
    {
        std::cin >> arr[i] ; 
    }
    int sum=0;
    for(int i=0;i<n;i++)
    {
        sum=sum+arr[i];
    }
    std::cout << sum/n;
    delete[] arr;

    return 0;
}