The quality of these quetions really took a dump :(

I'm tons problem about the Appraisals website and its security problems, can a person tell me the satisfactory security answers to be accompanied for my website?

This is the code I have written for python : def aVeryBigSum(ar): r = 0 for i in range (0,len(ar),1): r += ar[i] return r Is this the best way or is there another more proficient way ?

Here is my c++ solution, you can watch the video explanation here : https://youtu.be/k6H_RljnY8g

long aVeryBigSum(vector<long> ar) {
    long result = 0;
    for(int i = 0; i < ar.size(); i++) result += ar[i];
    return result;
}

def aVeryBigSum(ar): # Write your code here total = 0 [total := total + num for num in ar] return total