#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i;
char s[100003];
int expresie();
int factor();
int termen();
int main(){
    fin.getline(s,100001);
    fout<<expresie();
    return 0;
}
int expresie(){   ///= termen +- termen +- .... +-termen
    int r=termen();
    while(s[i]=='+' || s[i]=='-'){
        if(s[i]=='+')
            i++,r+=termen();
        else i++,r-=termen();
    }
    return r;
}
int termen(){   ///= factor */ factor */ ... */ factor
    int r=factor();
    while(s[i]=='*' || s[i]=='/'){
        if(s[i]=='*')
            i++,r*=factor();
        else i++,r/=factor();
    }
    return r;
}
int factor(){  ///constanta sau alta expresie
    int r=0;
    if(s[i]=='('){
        i++;
        r=expresie();
        i++; ///inchid paranteza rounda
    }
    else while(s[i]>='0' && s[i]<='9')
        r=r*10+s[i++]-'0';
    return r;
}