#!/bin/bash
inc=0
max=0
arr=()

while read line; do
	arr+=("$line")
done

for ((i=0; i<${#arr[@]}; i++)); do
	if [[ "${arr[$((i+3))]}" ]]; then
		val=$((${arr[$i]}+${arr[$((i+1))]}+${arr[$((i+2))]}))
	else
		break
	fi
	if [[ $val -gt $max ]]; then
		max=$val
		inc=$((inc+1))
	elif [[ $val -gt $last ]]; then
		inc=$((inc+1))
	fi
	last=$val
done

echo $inc