#include <fstream>

using namespace std;

int termen(); int factor(); int expresie();
int p;
char s[100002];

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

int termen()
{
    int prod=factor();
    while(s[p]=='*'||s[p]=='/')
    {
        if(s[p]=='*')
        {
            p++;
            prod*=termen();
        }
        else
        {
            p++;
            prod/=termen();
        }
    }
    return prod;
}

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

int main()
{
    ifstream f("evaluare.in");
    ofstream g("evaluare.out");

    f.getline(s,100001);
    g<<expresie()<<"\n";
}