#include #include using namespace std; using isize = size_t; using i32 = int; using u32 = unsigned int; using i64 = long long; using u64 = unsigned long long; using i128 = __int128_t; using u128 = __uint128_t; using f64 = long double; using p2 = pair; using el = tuple; using mint = atcoder::modint998244353; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(18); _main(); } i64 pow(i64 x, i64 n) { i64 res = 1; i64 t = x; while (n > 0) { if (n & 1) res *= t; t *= t; n >>= 1; } return res; } void _main() { i64 x, y, n; cin >> x >> y >> n; for (;n--;) { i64 u, v; cin >> u >> v; if (u == 0) { cout << (v - 1) % y + 1 << "\n"; continue; } u--, v--; if (u / y == v / y) { cout << abs(u - v) << "\n"; } else { cout << u % y + v % y + 2 << "\n"; } } }