#include <fstream>

const long kMAX = 100010;
char S[kMAX], *p = S;

long operand();
long factor();

long eval()
{
    long r = operand();
    while ( *p == '+' || *p == '-')
    {
        switch (*p)
        {
            case '+': 
                ++p; 
                r += operand(); 
                break;
            case '-':
                ++p;
                r -= operand();
                break;
        }
    }
    return r;
}

long operand()
{
    long r = factor();
    while ( *p == '*' || *p == '/')
    {
        switch (*p)
        {
            case '*': 
                ++p; 
                r *= factor(); 
                break;
            case '/':
                ++p;
                r /= factor();
                break;
        }
    }
    return r;
}

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

int main()
{
    std::ifstream fin("evaluare.in");
    fin >> S;
    fin.close();

    std::ofstream fout("evaluare.out");
    fout << eval() << '\n';
    fout.close();
    
    return 0;
}