import strutils, sequtils proc main() = let nm = stdin.readLine.split.map(parseInt) (n, m) = (nm[0], nm[1]) a = (0..<m).mapIt(stdin.readLine.split.map(parseInt)) var acc = newSeqWith(m+1, newSeq[int64](m+1)) for i in 0..<m: acc[i+1][1] = a[i][0] for j in 1..<m: acc[i+1][j+1] = acc[i+1][j]+a[i][j] for j in 0..<m: for i in 1..<m: acc[i+1][j+1]+=acc[i][j+1] for _ in 0..<n: let yx = stdin.readLine.split.map(parseInt) (y, x) = (yx[0], yx[1]) var tot = 0 for sy in 1..m: for sx in 1..m: for gy in sy..m: for gx in sx..m: if sy<=y and y<=gy and sx<=x and x<=gx: if acc[gy][gx]-acc[gy][sx-1]-acc[sy-1][gx]+acc[sy-1][sx-1]==0: tot+=1 echo tot main()