Dynamic Sensor Buffer

#include <iostream>

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

    if (n < 1) {
        return 0;
    }
    int *p_arr = new int[n];
    for(int i = 0; i < n; i++){
        std::cin >> p_arr[i];
    }
    int sum = 0;
    for(int i = 0; i < n; i++){
        sum += p_arr[i];
    }
    std::cout << sum / n;
    // Write your dynamic buffer allocation code here

    return 0;
}

Solving Approach