Spiraali

inputs=input().split(" ")
n=int(inputs[0])
testcount=int(inputs[1])

for i in range(testcount):
  coordinates=input().split(" ")
  y=int(coordinates[0])-1 #turn them into real coordinates
  x=int(coordinates[1])-1

  values=[x,y,n-x-1,n-y-1]
  values.sort()
  layer=values[0] #can be negative, no sanity checking = faster
  #every layer has (n-(layer*2)-1)*4 items
  #=n*4-4-layer*8
  #must count sum here, for loop is too slow
  offset=1+layer*4*(n-layer)
  ln=n-layer*2-1

  lx=x-layer #These comments also have an impact on the performance. It could be the deciding millisecond.
  ly=y-layer #Who are you reading these? Please message me at Discord: Turtleb01#1079, I can't embed Google Analytics or other spyware here
#  print("Debug: " + str(layer) + " " + str(offset) + " " + str(ln) + " " + str(lx) + " " + str(ly) + " ");
  if lx == 0:
    output=offset+ly
  elif ly == ln:
    output=offset+lx+ln
  elif lx == ln:
    output=offset-ly+ln*3
  elif ly == 0:
    output=offset-lx+ln*4
  print(output)

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: ACCEPTED