#include <fstream>
#include <vector>
#include <bitset>
#include <unordered_map>
#include <algorithm>
#include <queue>
#include <math.h>
#include <iomanip>
#include <stack>
  
using namespace std;

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

string s;
int t;

int termen();
int factor();

int eval()
{
	int r = termen();
	
	while(s[t] == '+' || s[t] == '-')
	{
		t++;
		if(s[t - 1] == '+')
			r += termen();
		else
			r -= termen();
	}
	
	return r;
}

int termen()
{
	int r = factor();
	
	while(s[t] == '*' || s[t] == '/')
	{
		t++;
		if(s[t - 1] == '*')
			r *= factor();
		else
			r /= factor();
	}
	
	return r;
}

int factor()
{
	int r = 0;
	
	if(s[t] == '(')
	{
		t++;
		r = eval();
		t++;
	}
	
	while(isdigit(s[t]))
	{
		r = r * 10 + s[t] - '0';
		t++;
	}
	
	return r;
}

main()
{
	cin >> s;
	
	t = 0;
	
	cout << eval();
}