#include <iostream>
#include <string>
#include <map>
#include <vector>


using namespace std;
long long tuy[100111];
int main() {
	long long  n; cin >> n;
	map<string, vector<long long >>pmh;
	long long  ww = 1;
	for (int ttt = 0; ttt < n; ttt++) {
		string s;
		cin >> s;
		if (s == "delete") {
			long long  ttttq; cin >> ttttq;
			for (int j = ww - 1; j >= 1; j--) {
				if (tuy[j] <= ttttq) {
					ttttq -= tuy[j];
					tuy[j] = 0;
				}
				else {
					tuy[j] -= ttttq;
					ttttq = 0;
				}
				if (ttttq == 0)
					break;
			}
		}
		if (s == "get") {
			string imi;
			cin >> imi;
			long long   anssss = 0;
			for (auto x : pmh[imi]) {
				anssss += tuy[x];
			}
			cout << anssss << endl;
		}
		if (s == "add") {
			long long  eqw;
			cin >> eqw;
			string name;
			cin >> name;
			pmh[name].push_back(ww);
			tuy[ww] = eqw;
			ww++;
		}
		return 0;
	}