def verificaSomma(P,K):
# @param P: picture
# @param K: int
# @param return bool
  listPixels=getPixels(P)
  for indexRiga in range(0,len(getPixels(P)), getWidth(P)):
    redRiga=0
    for index in range(indexRiga, indexRiga+getWidth(P)):
       redRiga=redRiga+getRed(listPixels[index])
       if redRiga==K:
         return true
  return false