#include <iostream>
#include <fstream>
using namespace std;

fstream in("evaluare.in", ios::in),
        out("evaluare.out");
char s[100001],*p;

int expresie();
int termen();
int factor();
bool cifra(char c);

int main()
{
    int sum;
    p=s;
    in.getline(s,100001);
    sum=expresie();
    out<<sum<<'\n';
    return 0;
}

int expresie(){
    int s=termen();
    while(*p=='+'||*p=='-'){
        if(*p=='+'){
            p++;
            s+=termen();
        }else{
            p++;
            s-=termen();
        }
    }
    return s;
}

int termen(){
    int prod=factor();
    while(*p=='*'||*p=='/'){
        if(*p=='*'){
            p++;
            prod*=factor();
        }else{
            p++;
            prod/=factor();
        }
    }
    return prod;
}

int factor(){
    int val=0,semn=1;
    while(*p=='-'){
        p++;
        semn=-semn;
    }
    if(*p=='('){
        p++;
        val=expresie();
        p++;
        return val*semn;
    }
    while(cifra(*p)){
        val=val*10+(*p-'0');
        p++;
    }
    return semn*val;
}

bool cifra(char c){
    if(c>='0'&&c<='9')
        return true;
    return false;
}