#include <bits/stdc++.h>

using namespace std;

#if 1
    #define pv(x) std::cerr<<#x<<" = "<<(x)<<"; ";std::cerr.flush()
    #define pn std::cerr<<std::endl
#else
    #define pv(x)
    #define pn
#endif

#ifdef INFOARENA
    ifstream in("evaluare.in");
    ofstream out("evaluare.out");
#else
    #define in cin
    #define out cout
#endif

using ll = long long;
using ull = unsigned long long;
using uint = unsigned int;
using ld = long double;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pld = pair<ld, ld>;
#define pb push_back
const double PI = 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862;
const int inf_int = 1e9 + 5;
const ll inf_ll = 1e18 + 5;
const int NMax = 1e5 + 5;
const int MMax = 2e5 + 5;
const int NumMax = 1e6 + 5;
const int dx[] = {-1,0,0,+1}, dy[] = {0,-1,+1,0};
const double EPS = 1e-8;

char str[NMax], *ptr = str;

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

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

    return ans;
}

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

    return ans;
}

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

    return ans;
}

int main() {
    cin.sync_with_stdio(false);
    cin.tie(0);

    in >> str;
    out << eval() << '\n';

    return 0;
}