#include <bits/stdc++.h>
#include <fstream>

using namespace std;
char s[100005];
int i = 1;
int expresie();
int termen();
int factor();
int constanta();
int expresie () {
    int a = termen();
    while(s[i] == '+' || s[i] == '-')
    {
        if(s[i] == '+')
        {
            i++;
            a += termen();
        }
        if(s[i] == '-')
        {
            i++;
            a -= termen();
        }
    }
    return a;
}
int termen () {
    int a = factor();
    while(s[i] == '*' || s[i] == '/')
    {
        if(s[i] == '*')
        {
            i++;
            a *= factor();
        }
        if(s[i] == '/')
        {
            i++;
            a /= factor();
        }
    }
    return a;
}
int factor () {
    int a;
    if(s[i] == '(')
    {
        i++;
        a = expresie();
        i++;
    } else
    {
        a = constanta();
    }
    return a;
}
int constanta () {
    int a=0;
    while(s[i]>='0' && s[i]<='9'){
        a=a*10+s[i]-'0';
        i++;
    }
    return a;
}
int main()
{
    ifstream fin ("evaluare.in");
    ofstream fout ("evaluare.out");
    fin >> s+1;
    i=1;
    fout << expresie();
}