#include <bits/stdc++.h>
constexpr int MAXN = 1e5 + 5;
using namespace std;
int tot, n, cnt;
unordered_map<int, int> Map;
vector<int> vec;
vector<pair<string, int>> opt;
string s;
inline void discretization() {
  sort(vec.begin(), vec.end());
  cnt = unique(vec.begin(), vec.end()) - vec.begin();
  for (int i = 0; i < cnt; i++) Map[vec[i]] = i;
}
struct Node {
  Node *lson, *rson;
  int cnt, l, r;
  long long sum[5];
} Tree[MAXN << 1];
inline Node *newNode(Node *&root) { return root = &Tree[++tot]; }
inline void update(Node *root) {
  root->cnt = root->lson->cnt + root->rson->cnt;
  for (int i = 0; i < 5; i++)
    root->sum[i] = root->lson->sum[i] +
                   root->rson->sum[((i - root->lson->cnt) % 5 + 5) % 5];
}
inline void build(int L, int R, Node *root) {
  root->l = L, root->r = R;
  if (L == R) return;
  int mid = (L + R) >> 1;
  build(L, mid, newNode(root->lson)), build(mid + 1, R, newNode(root->rson));
}
inline void modify(int pos, int val, Node *root) {
  if (root->l == pos && root->r == pos) {
    root->cnt += val, root->sum[1] += vec[pos];
    return;
  }
  int mid = (root->l + root->r) >> 1;
  if (pos <= mid) modify(pos, val, root->lson);
  if (pos > mid) modify(pos, val, root->rson);
  update(root);
}
int main() {
  std::ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  cin >> n;
  for (int i = 1, x; i <= n; i++) {
    cin >> s;
    if (s == "add")
      cin >> x, opt.push_back({s, x}), vec.push_back(x);
    else if (s == "del")
      cin >> x, opt.push_back({s, x});
    else
      opt.push_back({s, 0});
  }
  discretization(), build(0, cnt - 1, Tree);
  for (auto i : opt) {
    if (i.first == "add")
      modify(Map[i.second], 1, Tree);
    else if (i.first == "del")
      modify(Map[i.second], -1, Tree);
    else
      cout << Tree->sum[3] << endl;
  }
  return 0;
}
