#include<fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i;
char s[100005];

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

int expresie(){
    int rez = 0;
    rez = termen();
    while( s[i] == '+' || s[i] == '-' ){
        if( s[i] == '+' ){
            i++;
            rez += termen();
        }else{
            i++;
            rez -= termen();
        }
    }
    return rez;
}

int termen(){
    int rez = 0;
    rez = factor();
    while( s[i] == '*' || s[i] == '/' ){
        if( s[i] == '*' ){
            i++;
            rez *= factor();
        }else{
            i++;
            rez /= factor();
        }
    }
    return rez;
}

int factor(){
    int rez = 0;
    if( s[i] == '(' ){
        i++;
        rez = expresie();
        i++;
    }else{
        while( '0' <= s[i] && s[i] <= '9' ){
            rez *= 10;
            rez += s[i] - '0';
            i++;
        }
    }
    return rez;
}

int main(){
    fin >> s + 1;
    i = 1;
    fout << expresie();
    return 0;
}