use std::io::Write;

fn run() {
    input! {
        n: u64,
        m: u64,
        p: u64,
        q: usize,
        ask: [(u64, u64); q],
    }
    let pow = |mut r: u64, mut n: u64| -> u64 {
        let mut t = 1 % p;
        while n > 0 {
            if n & 1 == 1 {
                t = t * r % p;
            }
            r = r * r % p;
            n >>= 1;
        }
        t
    };
    let inv = |a: u64| {
        let a = a % p;
        assert!(a != 0);
        pow(a, p - 2)
    };
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    for (x, f) in ask {
        let x = x % p;
        let ans = if x == 0 {
            if f == 0 {
                m
            } else {
                0
            }
        } else {
            let y = f * inv(x) % p;
            let mut res = m / p;
            if y > 0 && y <= m % p {
                res += 1;
            }
            res
        };
        writeln!(out, "{}", ans).ok();
    }
}

fn main() {
    run();
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------