X, Y, N = map(int, input().split())

for _ in range(N):
    U, V = map(int, input().split())

    if V == 0:
        U, V = V, U
    
    if U == 0:
        print((V - 1) % Y + 1)
        continue

    ui = (U - 1) // Y
    uj = (U - 1) % Y + 1
    vi = (V - 1) // Y
    vj = (V - 1) % Y + 1

    if ui == vi:
        print(abs(uj - vj))
    else:
        print(abs(uj + vj))