What is correct algorithm?

My program that find 2 mins and print Math.Max(min1 + min2 - n, 0) don't pass test 13.

Consider test

3 3
2 2 2

Your solution says that there is a person who knows three different dialects.
But we can construct an example where it is not true:
1) first person knows dialects number 1 and 2
2) second knows 1 and 3
3) third knows 2 and 3

Do u give me ur wrong code?