#include<fstream>
using namespace std;
int i, r;
char s[100003];

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

int exp();
int fact();
int term();

int exp(){
    int r;

    r=term();

    while(s[i]=='+' || s[i]=='-'){
        if(s[i]=='+'){
            i++;
            r+=term();
        }
        else{
            i++;
            r-=term();
        }
    }

    return r;
}

int term(){
    int r;

    r=fact();

    while(s[i]=='*' || s[i]=='/'){
        if(s[i]=='*'){
            i++;
            r*=fact();
        }
        else{
            i++;
            r/=fact();
        }
    }
    return r;
}

int fact(){
    int r;

    if( s[i]=='('){
        i++;
        r = exp();
        i++;
    }
    else{
        r = 0;
        while(s[i]>='0' && s[i]<='9'){
            r*=10;
            r+=s[i]-'0';
            i++;
        }
    }
    return r;
}

int main(){
    in>>s;
    i=0;
    out<<exp();
return 0;
}