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

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int ret = 0, id = 0;
	bool isPossible = true;

	while (!cin.eof()) {
		switch (cin.get()) {
		case 'G':
			cin.ignore(4);
			cin >> id;
			break;
		case ':': case ',': case ';':
			if (!isPossible)
				break;
			cin.ignore(1);
			int n;
			cin >> n;
			cin.ignore(1);
			switch (cin.get()) {
			case 'r':
				if (n > 12)
					isPossible = false;
				break;
			case 'g':
				if (n > 13)
					isPossible = false;
				break;
			case 'b':
				if (n > 14)
					isPossible = false;
				break;
			}
			break;
		case '\n':
		case EOF:
			if (isPossible) {
				ret += id;
				id = 0;
			} else {
				isPossible = true;
			}
			break;
		}
	}

	cout << ret << '\n';
}