#!/bin/bash

array=()
while read line; do
  array+=($line)
done
array_length=${#array[@]}

prev=0
found=0
for i in $(seq $array_length); do
  if [ $((i-2)) -gt $array_length ]; then
    break
  fi
  current=$((array[i-1]+array[i]+array[i+1]))
  if [ $prev -gt 0 ] && [ $current -gt $prev ]; then
    found=$((found+1))
  fi
  prev=$current
done

echo $found