In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Input: Consider Input: Question: Which of the following characteristics defines an endogenous depression? 
 Options:  <1> Its course is continuous. <2> There is an evening worsening. <3> There is an early awakening. <4> There is a good response to placebo. <5> A neurotic personality intervenes in the etiopathogenesis.

Output: 3


Input: Consider Input: Question: In the health report of Mrs. P. T. of 83 years of age, it is reported that she has a depressive picture. Regarding depression in the elderly has been described that: 
 Options:  <1> It is uncommon for them to have somatic symptoms. <2> It is not characteristic that cognitive disorders appear. <3> The Yesavage scale is an instrument to establish a safe diagnosis of depression. <4> There is unanimity in stating that it has specific manifestations in the elderly. <5> There may be pictures of pseudodementia, with symptoms of dementia but caused by depressive states.

Output: 5


Input: Consider Input: Question: With respect to the distribution coefficient of a solute between two partially miscible liquids: 
 Options:  <1> Because it is a quotient between solute concentrations in the two phases, it is independent of temperature. <2> It does not depend on the total amount of solute in both parts. <3> It is useful to determine the molar mass of the solute. <4> If one phase is water and the other an organic solvent, it is usually used in medical and environmental chemistry to know the distribution of drugs and contaminants between these two types of media. <5> It only has physical significance when the liquid phases are in contact through a semipermeable membrane.


Output: 4