#include <fstream>

#define IOS ios::sync_with_stdio(false), cin.tie(0);

using namespace std;

ifstream cin("evaluare.in");
ofstream cout("evaluare.out");

const int N = 1e5 + 7;

char v[N];
char *p = v;

int termen();
int factor();

int eval()
{
	int r = termen();
	while(*p == '+' || *p == '-')
	{
		if(*p == '+')
			p++, r += termen();
		else
			p++, r -= termen();
	}
	return r;
}

int termen()
{
	int r = factor();
	while(*p == '*' || *p == '/')
	{
		if(*p == '*')
			p++, r *= factor();
		else
			p++, r /= factor();
	}
	return r;
}

int factor()
{
	int r = 0;
	if(*p == '(')
	{
		p++;
		r = eval();
		p++;
	}
	else
		while(*p <= '9' && *p >= '0')
			r = r * 10 + *p - '0', p++;
	return r;
}

main()
{
	cin >> v;
	cout << eval();
}