#include <bits/stdc++.h>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

int expresie();
int termen();
int factor(); 
int constanta(); 

char s[100001];
int i;
    
int main() {
    fin >> s;
    fout << expresie();
    return 0;
}

int expresie() {
    int r = termen();
    while(s[i] == '+' || s[i] == '-') {
        if(s[i] == '+') {
            i++;
            r += termen();
        }
            else
            if(s[i] == '-') {
                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;
    if(s[i] == '(') {
        i++;
        r = expresie();
        i++;
    }
        else
        r = constanta();
    return r;
}

int constanta() {
    int r = 0;
    while(isdigit(s[i])) {
        r = r * 10 + (s[i] - '0');
        i++;
    }
    return r;
}