#include <fstream>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
char s[100001];
int i;

int termen();
int factor();

int eval()
{
    int r=termen();
    while(s[i]=='+' || s[i]=='-')
    {
        switch(s[i])
        {
            case '+':
                i++;
                r+=termen();
                break;
            case '-':
                i++;
                r-=termen();
                break;
        }
    }
    return r;
}

int termen()
{
    int r=factor();
    while(s[i]=='*' || s[i]=='/')
    {
        switch(s[i])
        {
            case '*':
                i++;
                r*=factor();
                break;
            case '/':
                i++;
                r/=factor();
                break;
        }
    }
    return r;
}

int factor()
{
    int r=0;
    if (s[i]=='(')
    {
        i++;
        r=eval();
        i++;
    }
    else
    {
        while(s[i]>='0' && s[i]<='9')
            r=r*10+s[i++]-'0';
    }
    return r;
}

int main()
{
    fin>>s;
    fout<<eval();
    return 0;
}