n,m=gets.split.map &:to_i a=[[0]*-~m] a+=m.times.map{[0]+gets.split.map(&:to_i)} (m+1).times{|y|m.times{|x|a[y][x+1]+=a[y][x]}} (m+1).times{|x|m.times{|y|a[y+1][x]+=a[y][x]}} n.times{ r=0 x,y=gets.split.map{|e|e.to_i} (0...x).each{|x0|(x..m).each{|x1| (0...y).each{|y0|(y..m).each{|y1| r+=1 if a[x0][y0]-a[x1][y0]-a[x0][y1]+a[x1][y1]==0 }}}} p r }