You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Input: Consider Input: Bridget has 4 Skittles . Henry has 4 Skittles . If Henry gives all of his Skittles to Bridget , how many Skittles will Bridget have ?

Output: 8


Input: Consider Input: Misha has 34 dollars . How many dollars does she have to earn to have 47 dollars to buy a dog ?

Output: 13


Input: Consider Input: In a school , there are 542 girls and 387 boys . How many pupils are there in that school ?


Output: 929