Off Binary

Have the function OffBinary(strArr) read the array of strings stored in strArr, which will contain two elements, the first will be a positive decimal number and the second element will be a binary number. Your goal is to determine how many digits in the binary number need to be changed to represent the decimal number correctly (either 0 change to 1 or vice versa). For example: if strArr is ["56", "011000"] then your program should return 1 because only 1 digit needs to change in the binary number (the first zero needs to become a 1) to correctly represent 56 in binary.

Examples

Input: ["5624", "0010111111001"]
Output: 2

Input: ["44", "111111"]
Output: 3