#include #include using namespace std; using namespace atcoder; #define OVERLOAD_REP(_1, _2, _3, name, ...) name #define REP1(i, n) for (auto i = std::decay_t{}; (i) != (n); ++(i)) #define REP2(i, l, r) for (auto i = (l); (i) != (r); ++(i)) #define rep(...) OVERLOAD_REP(__VA_ARGS__, REP2, REP1)(__VA_ARGS__) #define REP(i, l, r) rep(i, l, r+1) #define all(x) (x).begin(),(x).end() #define rall(x) (x).rbegin(),(x).rend() using ll = long long; using ld = long double; using P = pair; struct Edge { int to; ll w; }; using Graph = vector >; //using Graph = vector >; const ll INF = 2e18; //const int INF = 2e9; template using vc = vector; template using vv = vector >; template using vvv = vector > >; template using pq = priority_queue; template using pq_g = priority_queue, greater >; template istream& operator>>(istream& i, vc& v) { rep(j, 0, v.size()) i>>v[j]; return i; } template ostream& operator<<(ostream& o, vc& v) { rep(j, 0, v.size()) o< bool chmin(T& a, T b) { if(a > b) { a = b; return true; } return false; } template bool chmax(T& a, T b) { if(a < b) { a = b; return true; } return false; } int main() { // 高速化 ios::sync_with_stdio(false); cin.tie(nullptr); // 小数点の出力桁数を指定 cout << fixed << setprecision(10); // メイン int X, Y, N; cin >> X >> Y >> N; rep(i, 0, N) { ll U, V; cin >> U >> V; ll un = (U-1)/Y, vn = (V-1)/Y; if(un==vn) { cout << abs(U-V) << endl; continue; } ll ud = U - un*Y, vd = V- vn*Y; if(U==0) cout << vd << endl; else if(V==0) cout << ud << endl; else cout << vd+ud << endl; } return 0; }