import std.stdio;
import std.file;
import std.array;
import std.uni : isWhite;

void main() {
	string contents = readText("input");
	auto lines = contents.split("\n\n");
	int good = 0;

	foreach(i, line; lines) {
		auto parts = line.split!(isWhite);

		string[] items = [ "byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid" ];
		int[string] totals;
		foreach(y, item; items)
			totals[item] = 0;

		foreach(x, part; parts) {
			auto fields = part.split(":");
			if(fields.length < 2)
				continue;

			if(!(fields[0] in totals))
				continue;

			totals[fields[0]]++;
		}

		int sum = 0;
		foreach(z, total; totals)
			sum += total;

		if(sum == items.length)
			good++;
	}

	writefln("There are %d valid passports.", good);
}