Algoritmo de validação de senha.

Exercício:

Rolien and Naej are the developers of a big programming portal. To help the new site registration system, they requested your help. Your job is write a code that validates passwords that are registered on the portal, for that you should be aware for the following requirements:

The password must contain at least one uppercase letter, one lowercase letter and a number; It can’t have any punctuation character, accent or space; Moreover, the password must be 6 to 32 characters. Input The input contains several test cases and ends with EOF. Each line has a string S, corresponding to the password that is entered by the user at registration.

Output The output contains a line, which can be "Senha valida.", if the password has all previously requested requirements, or "Senha invalida.", if one or more requirements aren’t met.