#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;
ifstream in("evaluare.in");
ofstream out("evaluare.out");

typedef long long ll;
const int NMax = 1e5 + 5;

int N;
char str[NMax],*p;

int eval();
int termen();
int factor();

int main() {
    in>>str;
    str[strlen(str)] = 'f';

    //cout<<str<<'\n';

    p = str;

    out<<eval()<<'\n';

    return 0;
}

int eval() {
    int ans = termen();
    while (*p == '+' || *p == '-') {
        switch (*p++) {
        case '+': ans += termen(); break;
        default: ans -= termen();
        }
    }
    return ans;
}

int termen() {
    int ans = factor();
    while (*p == '*' || *p == '/') {
        switch (*p++) {
        case '*': ans *= factor(); break;
        default: ans /= factor();
        }
    }
    return ans;
}

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