function sumItUp(units, cpu) {
	# avoid floating point arithmetic AT ALL COST!
	partsLen = split(cpu, parts, ".")
	if (partsLen == 1) {
		cost = parts[1] * 100
		return cost * units
	}

	dec = parts[2]
	dec = substr(dec, 0, 2)
	for (i = length(dec); i < 2; i++) {
		dec = dec"0"
	}

	cost = parts[1] * 100 + dec
	return cost * units
}
BEGIN {
	RS="\n"
	FS=";"

	split(ARG_TICKER, _tmp_tickers, ";")
	for (i in _tmp_tickers) {
		tickers[_tmp_tickers[i]] = ""
		hasTickers = 1
	}

	gsub(/[-: ]/, "", ARG_DATE_AFTER);
	gsub(/[-: ]/, "", ARG_DATE_BEFORE);

	profit = 0
}

(hasTickers == 1) && ($2 in tickers == 0) { next }

{
	fieldDate=$1
	gsub(/[-: ]/, "", fieldDate);

	if (ARG_DATE_AFTER != "" && ARG_DATE_AFTER > fieldDate) { next }
	if (ARG_DATE_BEFORE != "" && ARG_DATE_BEFORE < fieldDate) { next }
}

{
	if ($3 == "buy") {
		profit -= sumItUp($6, $4)
	} else if ($3 == "sell") {
		profit += sumItUp($6, $4)
	}
}

END {
	# taking the lazy way here, not cool!
	profit /= 100
	printf "%.2f\n", profit
}