x,y,n = map(int,input().split()) #0γŒηœŸγ‚“δΈ­ #1,2..y #y+1 for _ in range(n): u,v = map(int,input().split()) if u == 0: print((v-1)%y+1) continue if v == 0: print((u-1)%y+1) continue uu = (u-1) // y vv = (v-1) // y if uu == vv: print(abs(u-v)) continue print((u-1)%y + (v-1)%y + 2)