#include <fstream>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100000];
int p;

int expresie();
int termen();
int factor();
int main()
{
    f>>s;
   g<<expresie();



    f.close();
    g.close();
    return 0;
}
int expresie()
{
    int sum=termen();
    while(s[p]=='+'||s[p]=='-')

        if(s[p]=='+')
        {
            p++;
            sum+=termen();
        }
        else
        {
            p++;
            sum-=termen();
        }
    return sum;
}

int termen()
{
    int prod=factor();
    while (s[p]=='*'||s[p]=='/')
    {
        if(s[p]=='*')
        {
            p++;
            prod*=factor();
        }
        else
        {
            p++;
            prod/=factor();
        }
    }
    return prod;
}
int factor()
{
    int semn=1, val=0;
    while(s[p]=='-')
    {
        p++;
        semn=-semn;
    }
    if(s[p]=='(')
    {
        p++;
        val=expresie();
        p++;//paranteza inchisa
        return semn*val;
    }
    while(s[p]>='0'&&s[p]<='9')
    {
        val=val*10+s[p]-'0';
        p++;
    }
    return semn*val;
}