#include <iostream>
#include <fstream>
#include <set>
#include <unordered_set>
#include <bitset>
#include <cstring>

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

#define ll long long
#define ull unsigned long long
#define pb push_back
const int NMax = 1e7 + 5;
const char lvlOp[2][3] = {"+-","*/"};

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

int eval(int);
int compute(int,int,char);

int main() {
    in>>str;
    out<<eval(0)<<'\n';

    in.close();out.close();
    return 0;
}

int eval(int lvl) {
    int ans = 0;

    if (lvl == 2) {
        if (*p == '(') {
            ++p;
            ans = eval(0);
            ++p;
        }
        else {
            while ('0' <= *p && *p <= '9') {
                ans = ans * 10 + *p++ - '0';
            }
        }
    }
    else {
        for (ans = eval(lvl+1); *p != '\0' && strchr(lvlOp[lvl],*p);) {
            char op = *p++;
            ans = compute(ans,eval(lvl+1),op);
        }
    }

    return ans;
}

int compute(int nr1,int nr2,char op) {
    switch (op) {
        case '+': return nr1+nr2;
        case '-': return nr1-nr2;
        case '*': return nr1*nr2;
        case '/': return nr1/nr2;
    }
}