At a class, the students are going to choose a leader.
The class has 3 groups of students.
Each group contains 4 students.
so total students are 12.
After discussion, they determine this rule :

each students have to vote 1 from each group.
so each students have to vote for 3 persons.
example: if the groups are [a,b,c,d] [e,f,g,h] [i,j,k,l]
each student have to choose 1 from [a,b,c,d], 1 from [e,f,g,h], and 1 from [i,j,k,l]

If someone break the rule, his votes is disqualified.

(To simplify the problem, lets write just initials of the students,
since there is no 2 students has same initials)

## Question

## jasen

At a class, the students are going to choose a leader.

The class has 3 groups of students.

Each group contains 4 students.

so total students are 12.

After discussion, they determine this rule :

each students have to vote 1 from each group.

so each students have to vote for 3 persons.

example: if the groups are [a,b,c,d] [e,f,g,h] [i,j,k,l]

each student have to choose 1 from [a,b,c,d], 1 from [e,f,g,h], and 1 from [i,j,k,l]

If someone break the rule, his votes is disqualified.

(To simplify the problem, lets write just initials of the students,

since there is no 2 students has same initials)

here are the votes

there is 1 vote is disqualified.

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