#include<fstream>
#include<iostream>
#include<algorithm>
#include<cmath>
#include<climits>
#include<iomanip>
#define INF 100000
using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

//ifstream f("in.in");
//ofstream g("out.out");

int expresie();
int factor();
int termen();
int numar();

char s[100005];

int poz = 0;
int deep = -1;

int main(){

    f>>s;
    g<<expresie();

    f.close();
    g.close();
    return 0;
}

int expresie(){
    /*deep++;
    for(int i=1;i<=deep;i++){
        cout<<"    ";
    }
    cout<<"expresie: "<<poz<<'\n';*/

    int a = termen();
    int b;

    while(s[poz] == '+' || s[poz] == '-'){

        if(s[poz] == '+'){
            poz++;
            b = termen();
            a = a+b;
        }else if(s[poz] == '-'){
            poz++;
            b = termen();
            a = a-b;
        }
    }
    //deep--;
    return a;

}

int termen(){
    /*deep++;
    for(int i=1;i<=deep;i++){
        cout<<"    ";
    }
    cout<<"termen: "<<poz<<'\n';*/

    int a = factor();
    int b;

    while(s[poz] == '*' || s[poz] == '/'){

        if(s[poz] == '*'){
            poz++;
            b = factor();
            a = a*b;
        }else if(s[poz] == '/'){
            poz++;
            b = factor();
            a = a/b;
        }
    }
    //deep--;
    return a;
}

int factor(){
    /*deep++;
    for(int i=1;i<=deep;i++){
        cout<<"    ";
    }
    cout<<"factor: "<<poz<<'\n';*/

    int a;
    if(s[poz] == '('){
        poz++;
        a = expresie();
        poz++;
    }else{
        a = 0;
        while('0'<=s[poz] && s[poz]<='9'){
            a = a*10 + (s[poz]-'0');
            poz++;
        }
    }
    //deep--;
    return a;
}