#!/usr/bin/env bash

sum=0

while read a; do
  IFS=, read x y <<< $a
  IFS=- read x1 x2 <<< $x
  IFS=- read y1 y2 <<< $y

  if [[ $(( (x1 - y1) * (x2 - y2) )) -le 0 ]]; then
    let sum++
  fi
  
done

echo $sum