ArrayList<String> examples = new ArrayList<>();
		examples.add("g(g(g(g(g(1, 1), 1, 1, 1, 1), 1, 1, 1)), 2, 3)");
		examples.add("g()");
		examples.add("g(1)");
		examples.add("g(g(g()))");
		examples.add("g(g(1, 1), g(2), 3, g(g(4, 4), 4, 4, 4, 4), 5, g(6, 6, 6), g(7, g(7, 7), g(7, 7, 7), g(g(7, 7), 7)))");
		for (String ex : examples) {
			int i = 0, j = 1, k = 1;
			while (i < ex.length() && ex.charAt(i) != '(') {
				i++;
			}
			if (++i > ex.length() || ex.substring(i).matches("\\s*\\)\\s*")) {
				System.out.println(0);
			} else {
				while (j > 0) {
					switch (ex.charAt(++i)) {
						case '(':
							j++;
							break;
						case ')':
							j--;
							break;
						case ',':
							if (j == 1) {
								k++;
							}
							break;
					}
				}
				System.out.println(k);
			}
		}