Instructions: Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.
Input: sofia president of the school student organization held a meeting to talk about the food being served at the school cafeteria . the first order of business is to discuss whether the students like the food being served at the school . if 383 students said that they like the food and 431 students said they did n't how many students participated in the discussion ?
Output:
814