Write a java program to count the number of tigers. Tiger classification such as {1 1 2 2 5 3 4 4 1 3 3} and see the largest tiger species in the tiger species counting must not be more than 1 different codes to belong to the same group, for example {1 1 2 2 5 3 4 4 1 3 3} can be organized into 4 groups: {1 1 2 2 1} {2 2 3 3 3} {3 3 3 4 4 4 } {5 4 4} The number of tiger species. is 3 and 4, there are 6 tigers

input 12 1 1 2 2 5 3 4 4 4 1 3 3 output data 6