Given an integer $$$n$$$, the next line contains $$$n$$$ integer. Third line contains an integer $$$q$$$. The next $$$q$$$ lines, contains $$$q$$$ queries. Query format is $$$l_i$$$, $$$r_i$$$. You have to answer to queries like this. If all the numbers that are less or equal than its index, that is, $$$a_l$$$ $$$≤$$$ $$$0$$$, $$$a_{l + 1}$$$ $$$≤$$$ $$$1$$$, $$${...}$$$, $$$a_r$$$ $$$≤$$$ $$${r - l}$$$.

Constraints are $$$n$$$ $$$≤$$$ $$$2 • {10 ^ 5}$$$, $$$q$$$ $$$≤$$$ $$$2 • {10 ^ 5}$$$.

Can you help me to solve this problem?