#include <fstream>
#include <cstring>
#include <cctype>
#define nmax 50001
using namespace std;
ifstream cin("evaluare.in");
ofstream cout("evaluare.out");
int i;
string s;
int solve(),ecuatie(),valoare();
int get_number(){
    int r=0;
    while(isdigit(s[i]))
        r=r*10+s[i++]-'0';
    return r;
}
int solve(){
    int r=ecuatie();
    while(s[i]=='+'||s[i]=='-'){
        if(s[i]=='+'){
            i++;
            r+=ecuatie();
        }else{
            i++;
            r-=ecuatie();
        }
    }
    return r;
}
int ecuatie(){
    int r=valoare();
    while(s[i]=='*'||s[i]=='/'){
        if(s[i]=='*'){
            i++;
            r*=valoare();
        }else{
            i++;
            r/=valoare();
        }
    }
    return r;
}
int valoare(){
    int r=0;
    if(s[i]=='('){
        i++;
        r=solve();
        i++;
    }else
        r=get_number();
    return r;
}
int main()
{
    cin>>s;
    cout<<solve();
    return 0;
}