#include <fstream>
#include <vector>
#include <cstdlib>
#include <string>
#include <cstring>
using namespace std;
ifstream cin("evaluare.in");
ofstream cout("evaluare.out");
#define max 100050
char in[max]={0};
char *p=in;
int eval();
int termen();
int factor();


int main(){
    cin>>in;
    int r=eval();
    cout<<r;
    return 0;
}

int eval(){
    int r=termen();
    while(*p=='+'||*p=='-')
    {
        switch(*p){
            case '+':
                ++p;
                r += termen();
                break;
            case '-':
                ++p;
                r -= termen();
                break;
        }
    }
    return r;
}

int termen(){
    int r=factor();
    while(*p=='*'||*p=='/')
    {
        switch(*p){
            case '*':
                ++p;
                r *= factor();
                break;
            case '/':
                ++p;
                r /= factor();
                break;
        }

    }
    return r;
}

int factor(){
    int r=0;
    if(*p=='('){
        ++p;
        r=eval();
        ++p;
    }else{
        while(*p>='0'&&*p<='9'){
            r = r*10 + *p-'0';
            ++p;
        }
    }
    return r;
}