use std::cmp;

fn main() {
    let (r, w) = (std::io::stdin(), std::io::stdout());
    let mut sc = IO::new(r.lock(), w.lock());

    let x: i64 = sc.read();
    let mut events = vec![];
    let k: usize = sc.read();
    for _ in 0..k {
        let r: i64 = sc.read();
        events.push((r, true, (0, 0)));
    }

    let q: usize = sc.read();
    let mut ans = vec![0; q];
    for i in 0..q {
        let t: i64 = sc.read();
        let a: i64 = sc.read();
        events.push((t, false, (a, i)));
    }

    events.sort();

    let mut min = 0;
    let mut max = x;
    let mut lower = 0;
    let mut upper = x;
    let mut up = true;
    let mut prev_turn = 0;
    for (time, is_turn, (a, i)) in events.into_iter() {
        let dt = time - prev_turn;
        if is_turn {
            if up {
                if min < dt {
                    let d = dt - min;
                    lower += d;
                }

                max = cmp::max(max - dt, 0);
                min = cmp::max(min - dt, 0);
            } else {
                if max + dt > x {
                    let d = max + dt - x;
                    upper -= d;
                }

                max = cmp::min(max + dt, x);
                min = cmp::min(min + dt, x);
            }

            up = !up;
            prev_turn = time;
        } else {
            let mut lower = lower;
            let mut upper = upper;
            let mut min = min;
            let mut max = max;
            if up {
                if min < dt {
                    let d = dt - min;
                    lower += d;
                }

                max = cmp::max(max - dt, 0);
                min = cmp::max(min - dt, 0);
            } else {
                if max + dt > x {
                    let d = max + dt - x;
                    upper -= d;
                }

                max = cmp::min(max + dt, x);
                min = cmp::min(min + dt, x);
            }

            if lower <= a && a <= upper {
                assert_eq!(upper - lower, max - min);
                assert_eq!(max - (upper - a), min + (a - lower));
                ans[i] = min + (a - lower);
            } else if a < lower {
                ans[i] = min;
            } else {
                ans[i] = max;
            }
        }

        if upper >= lower {
            assert_eq!(upper - lower, max - min);
        } else {
            assert_eq!(max, min);
        }
    }

    for ans in ans.into_iter() {
        sc.write(ans);
        sc.write("\n");
    }
}

pub struct IO<R, W: std::io::Write>(R, std::io::BufWriter<W>);

impl<R: std::io::Read, W: std::io::Write> IO<R, W> {
    pub fn new(r: R, w: W) -> Self {
        Self(r, std::io::BufWriter::new(w))
    }
    pub fn write<S: ToString>(&mut self, s: S) {
        use std::io::Write;
        self.1.write(s.to_string().as_bytes()).unwrap();
    }
    pub fn read<T: std::str::FromStr>(&mut self) -> T {
        use std::io::Read;
        let buf = self
            .0
            .by_ref()
            .bytes()
            .map(|b| b.unwrap())
            .skip_while(|&b| b == b' ' || b == b'\n' || b == b'\r' || b == b'\t')
            .take_while(|&b| b != b' ' && b != b'\n' && b != b'\r' && b != b'\t')
            .collect::<Vec<_>>();
        unsafe { std::str::from_utf8_unchecked(&buf) }
            .parse()
            .ok()
            .expect("Parse error.")
    }
    pub fn vec<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read()).collect()
    }
    pub fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
}


Measured memory_bytes: 11560