终有绿洲摇曳在沙漠

1.题目描述：C. Fountainstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputArkady plays Gardenscapes a lot.

一、题意概述给你 n (1≤n≤105)n (1≤n≤105)n\ (1\leq n\leq 10^5) 个数 a1...n (1≤ai≤n)a1...n (1≤ai≤n)a_{1...n}\ (1\leq a_i \leq n) 并且有 q (1≤q≤105)q (1≤q≤105)q\ (1\leq q\leq 10^5) 次询问，...