#include <bits/stdc++.h>

#include <atcoder/all>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define FAST_IO                \
  ios::sync_with_stdio(false); \
  cin.tie(0);
const i64 INF = 1001001001001001001;
using Modint = atcoder::static_modint<998244353>;

int main() {
  FAST_IO

  i64 X, Y, N;
  cin >> X >> Y >> N;
  vector<i64> U(N), V(N);
  for (int i = 0; i < N; i++) {
    cin >> U[i] >> V[i];
  }
  for (int i = 0; i < N; i++) {
    i64 s1 = (U[i] - 1) / Y;
    i64 s2 = (U[i] - 1) % Y;
    i64 t1 = (V[i] - 1) / Y;
    i64 t2 = (V[i] - 1) % Y;
    if (U[i] == 0 || V[i] == 0) {
      cout << max(s2, t2) + 1 << endl;
    } else if (s1 == t1) {
      cout << abs(s2 - t2) << endl;
    } else {
      cout << s2 + t2 + 2 << endl;
    }
  }
}