use proconio::{fastout, input};

#[fastout]
fn main() {
    input! {
        x: u32,
        y: u32,
        n: usize,
        moving: [(u64, u64); n],
    }

    println!("{}", output(solve(x, y, moving)));
}

fn solve(_x: u32, y: u32, moving: Vec<(u64, u64)>) -> Vec<u64> {
    let mut ans = Vec::with_capacity(moving.len());
    for (u, v) in moving {
        if u == 0 {
            ans.push((v - 1) % y as u64 + 1);
        } else if (u - 1) / y as u64 == (v - 1) / y as u64 {
            ans.push(v - u);
        } else {
            ans.push((u - 1) % y as u64 + (v - 1) % y as u64 + 2);
        }
    }
    ans
}

fn output(ans: Vec<u64>) -> String {
    ans.into_iter()
        .map(|x| x.to_string())
        .collect::<Vec<_>>()
        .join("\n")
}