#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i=0;
char s[10000];
int solve();
int mult();
int num()
{
    int t=0;
    if(s[i]=='(') {
        i++;
        t=solve();
        i++;
    } else {
        while(s[i]>='0'&&s[i]<='9')t=t*10+s[i++]-'0';
    }
    return t;
}
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 main()
{
    fin.getline(s,10000);
    fout<<solve();
    return 0;
}