记录

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define N 1e9
#define pop pop()
#define top top()
#define empty empty()
#define size size()

string s[2100], s1;
stack<int>a;
int x[2100], m, n, q, qwe;
bool qwq;
void NUM(int w) {
	if (abs(w) > N) {
		qwq = 1;
		return ;
	}
	a.push(w);
}
void INV() {
	qwq = a.empty;
	if (qwq == 1) return ;
	int m = a.top;
	a.pop;
	NUM(0 - m);
}
void POP() {
	qwq = a.empty;
	if (qwq == 1) {
		return ;
	}
	a.pop;
}
void DUP() {
	qwq = a.empty;
	if (qwq == 1) return;
	NUM(a.top);
}
void SWP() {
	qwq = (a.size) < 2;
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	int y = a.top;
	a.pop;
	a.push(x);
	a.push(y);
}
void ADD() {
	qwq = a.size < 2;
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	x += a.top;
	a.pop;
	NUM(x);
}
void SUB() {
	qwq = (a.size < 2);
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	int y = a.top;
	a.pop;
	NUM(x - y);
}
void MUL() {
	qwq = (a.size < 2);
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	int y = a.top;
	a.pop;
	NUM(x * y);
}
void MOD() {
	qwq = (a.size < 2);
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	int y = a.top;
	a.pop;
	if (x == 0) {
		qwq = 1;
		return ;
	}
	NUM(y % x);
}
void DIV() {
	qwq = (a.size < 2);
	if (qwq == 1) return ;
	int x = a.top;
	a.pop;
	int y = a.top;
	a.pop;
	if (x == 0) {
		qwq = 1;
		return ;
	}
	NUM(y / x);
}
signed main() {
	for (; ; qwe++) {
		cin >> s[qwe];
		if (s[qwe] == "NUM") {
			cin >> x[m];
			m++;
		}
		if (s[qwe] == "END") break;
	}
	cin >> n;
	qwe--;
	while (n--) {

		cin >> q;
		for (int i = 0; i < a.size; i++) {
			a.pop;
		}
		m = 0;
		qwq = 0;
		NUM(q);
		for (int i = 0; i <= qwe; i++) {
			s1 = s[i];
			if (qwq) {
				cout << "ERROR\n";
				break;
			}
			if (s1 == "NUM") {
				NUM(x[m]);
				m++;
			}
			if (s1 == "POP")
				POP();

			if (s1 == "INV")
				INV();

			if (s1 == "DUP")
				DUP();

			if (s1 == "SWP")
				SWP();

			if (s1 == "ADD")
				ADD();
			if (s1 == "SUB")
				SUB();
			if (s1 == "MUL")
				MUL();
			if (s1 == "DIV")
				DIV();
			if (s1 == "MOD")
				MOD();
			if (qwq) {
				cout << "ERROR\n";
				break;
			}
		}
		if (!qwq) {
			if (a.size == 1)
				cout << a.top << "\n";
			else cout << "ERROR\n";
		}
	}
	return 0;
}