source 2-1.sh

tolerant_is_gradual_monotone () {
    # Echoes 1 if the arguments are gradual monotone or if removing
    # a single argument will make the rest gradual monotone. 0 otherwise.

    local output=0
    if [ $(is_gradual_monotone $@) -eq 1 ]; then
        output=1
    else
        local i=1
        while [ $i -le $# ]; do
            subarray=$( echo $@ | cut -d ' ' -f $i --complement )
            if [ $(is_gradual_monotone $subarray) -eq 1 ]; then
                output=1
                break
            fi
            i=$((i + 1))
        done
    fi
    echo $output
}

main_2_2 () {
    num_gradual_monotone=0

    while read line; do
        line_is_gradual_monotone=$(tolerant_is_gradual_monotone $line)
        num_gradual_monotone=$((num_gradual_monotone + line_is_gradual_monotone))
    done <<< $(cat input.txt)

    echo $num_gradual_monotone
}

# main_2_2