#include <bits/stdc++.h>

using namespace std;

ifstream fin ("evaluare.in");
ofstream fout ("evaluare.out");
char s[100010];
int n,i;
int expresie();
int termen();
int factor();
int main (){

    fin>>s+1;
    n = strlen (s+1);
    i = 1;
    fout<<expresie();

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