import java.io.*;
import java.util.Arrays;
import java.util.HashMap;
import java.util.StringTokenizer;

public class D {
	BufferedReader in;
	StringTokenizer str;
	PrintWriter out;
	String SK;

	String next() throws IOException {
		while ((str == null) || (!str.hasMoreTokens())) {
			SK = in.readLine();
			if (SK == null)
				return null;
			str = new StringTokenizer(SK);
		}
		return str.nextToken();
	};

	int nextInt() throws IOException {
		return Integer.parseInt(next());
	};

	double nextDouble() throws IOException {
		return Double.parseDouble(next());
	};

	long nextLong() throws IOException {
		return Long.parseLong(next());
	};

	HashMap<Integer, Integer> dl;
	int num[];
	int val[];
	int count[];
	long sum[][];

	void add(int l, int r, int i, int wht, int pos, int type) {
		if (l == r) {
			if (type == -1) {
				count[i] = 0;
				sum[1][i] = 0;
			} else {
				count[i] = 1;
				sum[1][i] = wht;
			}
			return;
		}
		if (pos <= (l + r) / 2)
			add(l, (l + r) / 2, i * 2, wht, pos, type);
		else
			add((l + r) / 2 + 1, r, i * 2 + 1, wht, pos, type);
		count[i] = (count[i * 2] + count[i * 2 + 1]) % 5;
		for (int j = 0; j < 5; j++) {
			sum[j][i] = sum[j][i * 2]
					+ sum[(j - count[i * 2] + 10) % 5][i * 2 + 1];
		}

	}

	void solve() throws IOException {
		int n = nextInt();
		String zapr[] = new String[n];
		num = new int[n];
		val = new int[n];
		int kl = 0;
		for (int i = 0; i < n; i++) {
			zapr[i] = next();
			if (!zapr[i].equals("sum")) {
				num[i] = nextInt();
				val[kl] = num[i];
				kl++;
			}
		}
		dl = new HashMap<Integer, Integer>();
		Arrays.sort(val, 0, kl);
		int t = 1;
		for (int i = 0; i < kl; i++) {
			if (!dl.containsKey(val[i])) {
				dl.put(val[i], t);
				t++;
			}
		}
		count = new int[t * 4 + 20];
		sum = new long[6][t * 4 + 20];
		for (int i = 0; i < n; i++) {
			if (zapr[i].equals("add")) {
				int pos = dl.get(num[i]);
				add(1, t, 1, num[i], pos, 1);

			}
			if (zapr[i].equals("del")) {
				int pos = dl.get(num[i]);
				add(1, t, 1, num[i], pos, -1);
			}
			if (zapr[i].equals("sum"))
				out.println(sum[3][1]);
		}

	};

	void run() throws IOException {

		in = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		solve();
		out.close();
	}

	public static void main(String[] args) throws IOException {
		new D().run();
	}

}
