#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;

typedef modint998244353 mint;
typedef long long ll;

ll mod_pow(ll x, ll m, int P){
	ll ret = 1;
	ll tmp = x;
	while (m > 0){
		if (m&1){
			ret = ret * tmp % P;
		}
		m >>= 1;
		tmp = tmp * tmp % P;
	}
	return ret;
}

int main(){
	ll n, m, p; cin >> n >> m >> p;
	int q; cin >> q;
	ll base = m / p;
	ll amari = m % p;
	for (int i=0; i<q; i++){
		ll x, f; cin >> x >> f;
		if (x % p == 0){
			if (f == 0){
				cout << m << "\n";
			}else{
				cout << 0 << "\n";
			}
		}else{
			ll tar = mod_pow(x % p, p-2, (int)p) * f % p;
			if ((tar - 1 + p) % p <= amari){
				cout << base + 1 << "\n";
			}else{
				cout << base << "\n";
			}
		}
	}
}