Problem: You are given a number n. Find the decimal value of the number formed by the concatenation of the binaryrepresentation of the first n positive integers. Print the answer 10^9 + 7. Output format: Print the answer modulo 10^9 + 7 Constraint: 1 <= n <= 10^9 Sample input: 3 Sample Output: 27 The binary representation of 1: 1 The binary representation of 2: 10 The binary representation of 3: 11 Concatenated string: 11011 -> Decimal representation is 27.
