public static int GetNumberOfYesAnswers(List <string> input)
{
List <string> uniqueAnswers = Customs.GetUnionAllAnswers(input);
List <int> uniqueDistinctAnswers = new List <int>();
uniqueAnswers.ForEach(uniqueAnswer => uniqueDistinctAnswers.Add(uniqueAnswer.Distinct().Count()));
return(uniqueDistinctAnswers.Sum());
}
public static int GetNumberOfYesAnswersEveryone(List <string> input)
{
List <string> uniqueAnswers = Customs.GetUnionAllAnswers(input);
int everyoneAnswers = uniqueAnswers
.Select(answer => answer.Split('\n')
.Aggregate((a, b) => string.Concat(b.Intersect(a)))
.Count())
.Sum();
return(everyoneAnswers);
}