#include<bits/stdc++.h>
using namespace std;
#define N 100000

int n, res, g, m, k, B;
string s;

int getNum1(string s1) {
	int res = 0;
	int lf, rg;
	while ((lf = s1.find('[')) != s1.npos) {
		rg = s1.find(']');
		res += (stoi(s1.substr(lf + 1, rg - lf - 1)));

		s1 = s1.substr(rg + 1);
	}

	return res;
}

int getNum2(string s1) {
	int res = 0, i = 0;
	while (i < s1.size()) {
		while (i < s1.size() && s1[i] != '"')i++;
		int lf = i;
		i++;
		while (i < s1.size() && s1[i] != '"')i++;
		int rg = i;
		i++;
		res += rg - lf - 1;
	}

	return res;
}



int main() {
	cin >> n;
	getchar();
	while (n--) {
		getline(cin, s);

		int pos = s.find(' ');
		string type_str = s.substr(0, pos), str = s.substr(pos + 1);
		if (type_str == "int")res += 4 * (count(str.begin(), str.end(), ',') + 1);
		else if (type_str == "int[]")res += 4 * getNum1(str);
		else if (type_str == "long") res += 8 * (count(str.begin(), str.end(), ',') + 1);
		else if (type_str == "long[]")res += 8 * getNum1(str);
		else if (type_str == "String")res += getNum2(str);

	}

	g = res / 1024 / 1024 / 1024, m = res / 1024 / 1024 % 1024, k = res / 1024 % 1024, B = res % 1024;
	if (g)cout << g << "GB";
	if (m)cout << m << "MB";
	if (k)cout << k << "KB";
	if (B)cout << B << "B";
	//system("pause");
	return 0;
}

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