#include <bits/stdc++.h>

using namespace std;

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

int expresie(),termen(),factor();
int i,n;
char s[100100];

int expresie()
{
    int t,nr;
    if(s[i]=='(')
    {
        i++;
        t=termen();
        i++;
    }
    else
    {
        nr=0;
        while('0'<=s[i] && s[i]<='9')
        {
            nr=nr*10+(s[i]-'0');
            i++;
        }
        t=nr;
    }
    return t;
}

int factor()
{
    int t;
    t=expresie();
    while(i<=n && (s[i]=='*' || s[i]=='/'))
    {
        i++;
        if(s[i-1]=='*')t=t*expresie();
        else t=t/expresie();
    }
    return t;
}

int termen()
{
    int t;
    t=factor();
    while(i<=n && (s[i]=='+' || s[i]=='-'))
    {
        i++;
        if(s[i-1]=='+')t=t+factor();
        else t=t-factor();
    }
    return t;
}

int main()
{
    f>>(s+1);
    n=strlen(s+1);
    i=1;
    g<<termen();
    return 0;
}