A1327 | [COCI-2015_2016-contest7]#4 PROKLETNIK

Young Luka is about to enter a house with the evil witch Marica inside. As soon as he enters the house, she asks him questions about her array of N numbers. Luka fearfully asks for a clarification of the questions. Marica explains to him that each query consists of two integers L and R which represent the positions of a contiguous sub-array in her array.
It is Luka’s task to answer for each query what the longest contiguous sub-array of that contiguous sub-array (it can be the entire sub-array) having the property of being magical. An array is called magical if all the values are between the values of the first and last number in that array. For example, [1 3 1 2 4] is magical, the same as [4 1 1 2 1], whereas [3 3 4 1] is not magical.

The first line of input contains the integer N (1 6 N 6 500 000), the number of numbers in the array.
The second line contains N integers ai (1 6 ai 6 109 ).
The third line contains the integer Q (1 6 Q 6 500 000), the number of queries.
Each of the following Q lines contains two integers, L and R (1 6 L 6 R 6 N), representing the sub-array from the query.

The i th line of output must contain a single integer – the answer to the i th query.