var literal = 0, memory = 0;
var file = process.argv[2] ? process.argv[2] : 'day8_input';

require('readline').createInterface({
	input: require('fs').createReadStream(file)
})
.on('line', function (line) {
	var length = line.length;
	for (var i = 0; i < length; i++) {
		literal++;

		var character = line[i];
		if (character === '"') continue;
		if (character === '\\') {
			literal++; i++;
			if (line[i] === 'x') {
				literal += 2; i+= 2;
			}
		}

		memory++;
	}
})
.on('close', function () {
	console.log(literal - memory);
});