#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int termen();
int factor();
int nr();

char v[100002];

int i;

int main(){
    fin>>v;
    fout<<termen();
}

int termen(){
    int r=factor();
    while(v[i]=='-' || v[i]=='+'){
        if(v[i]=='-'){
            i++;
            r-=factor();
        }else{
            i++;
            r+=factor();
        }
    }
    return r;
}

int factor(){
    int r=nr();
    while(v[i]=='*' || v[i]=='/'){
        if(v[i]=='*'){
            i++;
            r*=nr();
        }else{
            i++;
            r/=nr();
        }
    }
    return r;
}

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