The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: what is the sum of the odd integers from 55 to 75 , inclusive ?

Output: 71


Input: Consider Input: Problem: the average weight of 8 person ' s increases by 3 kg when a new person comes in place of one of them weighing 70 kg . what might be the weight of the new person ?

Output: 94 kg


Input: Consider Input: Problem: a and b can do a work in 5 days and 10 days respectively . a starts the work and b joins him after 2 days . in how many days can they complete the remaining work ?


Output: 2