#include <iostream>
#include <fstream>
using namespace std;

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

char s[100003];
int i;

int num();
int mult();
int solve()
{
    int t=mult();
    while(s[i]=='+' || s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            t+=mult();
        }
        else{
            i++;
            t-=mult();
        }
    }
    return t;
}

int mult()
{
    int t=num();
    while(s[i]=='*' || s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            t*=num();
        }
        else{
            i++;
            t/=num();
        }
    }
    return t;
}

int num()
{
    int t=0;
    if(s[i]=='(')
    {
        i++;
        t=solve();
        i++;
    }
    else
    {
        while(s[i]<='9' && s[i]>='0')
        {
            t=t*10+s[i]-'0';
            i++;
        }
    }
    return t;
}

int main()
{
    f>>s;
    g<<solve();
}