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: The school cafeteria had 14 apples . If they used 13 to make lunch for the students and then bought 49 more , how many apples would they have ?

Output: 50


Input: Consider Input: A teacher had 6 worksheets to grade . If she graded 4 , but then another 18 were turned in , how many worksheets would she have to grade ?

Output: 20


Input: Consider Input: While playing a trivia game , Adam answered 5 questions correct in the first half and 5 questions correct in the second half . If each question was worth 5 points , what was his final score ?


Output: 50