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

Ex Input:
Problem: in a dance competition the points in each round for the first , second , third and fourth position were 10050 , 2010 . no other points were given . ashita participated in several rounds in the competition and the product of her score was 50000 . in how many rounds did she participate ?

Ex Output:
can not be determine


Ex Input:
Problem: the dimensions of a room are 25 feet * 15 feet * 12 feet . what is the cost of white washing the four walls of the room at rs . 7 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each ?

Ex Output:
s . 6342


Ex Input:
Problem: p , q and r have rs . 7000 among themselves . r has two - thirds of the total amount with p and q . find the amount with r ?

Ex Output:

rs . 2800