using namespace std;
#include<bits/stdc++.h>

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

#define DIM 100005

char expresie[DIM], *p;
int eval();
int termen();
int factor();

int main() {
    
    fin >> expresie;
    
    p = expresie;
    
    fout << eval();
    
    return 0;
}

int eval() {
    
    int r = termen();
    while (*p == '+' || *p == '-') {
        if (*p == '+') {
            p++;
            r += termen();
        } else {
            p++;
            r -= termen();
        }
    }
    return r;
}

int termen() {
    
    int r = factor();
    
    while (*p == '*' || *p == '/') {
        if (*p == '*') {
            p++;
            r *= factor();
        } else {
            p++;
            r /= factor();
        }
    }
    return r;
}

int factor() {
    
    int r = 0;
    
    if (*p == '(') {
        p++;
        r = eval();
        p++;
    } else {
        while (*p >= '0' && *p <= '9') {
            r = r*10 + *p - '0';
            p++;
        }
    }
    return r;
}