class digit_op:
            def num(self,num1):
                https://github.com/dixith2004/dixith2004/releases/tag/v1.2 = num1
            
        class sum(digit_op):
            def calculate_pairs_sum(self):
                digits = [int(digit) for digit in str(https://github.com/dixith2004/dixith2004/releases/tag/v1.2)][::-1]
        
                total_sum = 0
                n = len(digits)
        
                for i in range(n):
                    for j in range(i + 1, n):
                        total_sum += digits[i] + digits[j]
                return total_sum
        
        num= 1234
        calculate= sum()
        https://github.com/dixith2004/dixith2004/releases/tag/v1.2(num)
        
        print("Final sum:",https://github.com/dixith2004/dixith2004/releases/tag/v1.2())