use proconio::input;

fn main() {
    input! {
        x: usize,
        y: usize,
        n: usize
    }
    for _ in 0..n {
        input! {
            u: usize,
            v: usize
        }
        let dist_u = if u == 0 { 0 } else { (u-1) % y + 1 };
        let arm_u = if u == 0 { 0 } else { (u-1) / y + 1 };
        let dist_v = (v-1) % y + 1;
        let arm_v = (v-1) / y + 1;
        let ans = if arm_u == arm_v  {
            dist_u.abs_diff(dist_v)
        } else {
            dist_u + dist_v
        };
        println!("{}", ans);
    }
}