#include <fstream>
	
 
	
using namespace std;
	
 
	
ifstream cin("evaluare.in");
	
ofstream cout("evaluare.out");
	
 
	
const int dim = 100005;
	
 
	
int current;
	
char a[dim];
	
 
	
int evaluare();
	
int termen();
	
int factor();
	
 
	
bool isOp1(char c)
	
{
	
    return (c == '+' || c == '-');
	
}
	
 
	
 
	
bool isOp2(char c)
	
{
	
    return (c == '*' || c == '/');
	
}
	
 
	
bool isDigit(char c)
	
{
	
    if(c >= '0' && c <='9')
	
        return true;
	
    return false;
	
}
	
 
	
int getSign(char c)
	
{
	
    if(c == '-')
	
        return -1;
	
    else if(c == '+')
	
        return 1;
	
    return 0;
	
}
	
 
	
int getDigit(char c)
	
{
	
    return c - '0';
	
}
	
 
	
int evaluare()
	
{
	
    int rez = termen(), sign = 0;
	
    while((sign = getSign(a[current])) != 0)
	
    {
	
        current++;
	
        rez += sign * termen();
	
    }
	
    return rez;
	
}
	
 
	
int termen()
	
{
	
    int rez = factor();
	
    while(isOp2(a[current]))
	
    {
	
        if(a[current] == '*')
	
            current++, rez *= factor();
	
        else if(a[current] == '/')
	
            current++, rez /= factor();
	
    }
	
    return rez;
	
}
	
 
	
int factor()
	
{
	
    int rez = 0, sign = 1;
	
    while(a[current] == '-')
	
    {
	
        current++;
	
        sign *= -1;
	
    }
	
 
	
    if(a[current] == '(')
	
    {
	
        current++;
	
        rez = evaluare();
	
        current++;
	
        return rez * sign;
	
    }
	
 
	
    while(isDigit(a[current]))
	
    {
	
        rez = rez * 10 + getDigit(a[current]);
	
        current++;
	
    }
	
 
	
    return rez * sign;
	
}
	
 
	
int main()
	
{
	
    cin>>a;
	
    int rez = evaluare();
	
    //cout<<a;
	
   cout<<rez;
	
    return 0;
	
}