#include <fstream>
#include <queue>
#include <vector>
#include <algorithm>
#include <cstring>

using namespace std;
#define Inf 0x3f3f3f3f

ifstream cin("evaluare.in");
ofstream cout("evaluare.out");

string a;
int p = 0;
int rez;

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

int eval(){

    int semn = 1;
    int ans = termen();
    while(a[p] == '+' || a[p] == '-'){
        int semn = 1;
        p++;
        if(a[p - 1] == '-')
            semn = -1;
        else if(a[p - 1] == '+')
            semn = 1;

        ans = ans + (semn * termen());
    }
    
    return ans;
}

int termen(){

    int ans = factor();
    while(a[p] == '*' || a[p] == '/'){
        p++;
        if(a[p - 1] == '/')
            ans /= factor();
        else if(a[p - 1] == '*')
            ans *= factor();
    }
    
    return ans;
}
int factor(){

    int ans = 0;
    if(a[p] == '('){
        p++;
        ans = eval();
        p++;
    }
    else{
        while(a[p] >= '0' && a[p] <= '9')
            ans = ans * 10 + (a[p++] - '0'); 
    }

    return ans;
}

int main(){

    cin >> a;
    cout << eval();


    return 0;
}