#include <fstream>
#include <cctype>
#define in "evaluare.in"
#define out "evaluare.out"
#define lgmax 100003

using namespace std;

ifstream fin(in);
ofstream fout(out);

char c[lgmax],*p = c;

inline int eval();
inline int termen();
inline int factor();

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

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

inline int factor()
{
    if(*p == '(')
    {
        ++p;
        return eval();
    }
    int r = 0;
    while(isdigit(*p))
        r = r*10 + *p - '0', ++p;
    return r;
}

int main()
{
    fin.getline(c,lgmax);
    fout<<eval();

    fin.close(); fout.close();
    return 0;
}