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

ifstream in("evaluare.in");
ofstream out("evaluare.out");

char s[100001];
int i=0;

int expresie();
int termen();
int factor();
int constanta();

int expresie(){
    int r=termen();
    while(s[i]=='+' || s[i]=='-'){
        char semn=s[i];
        i++;
        if(semn=='+')
            r+=termen();
        if(semn=='-')
            r-=termen();
    }
    return r;
}

int termen(){
    int r=factor();
    while(s[i]=='*' ||s[i]=='/'){
        char semn=s[i];
        i++;
        if(semn=='*')
            r*=factor();
        if(semn=='/')
            r/=factor();
    }
    return r;
}

int factor(){
    int r;
    if(s[i]=='('){
        i++;
        r=expresie();
        i++;
    }else{
        r=constanta();
    }
    return r;
}

int constanta(){
    int r=0;
    while(s[i]>='0' && s[i]<='9'){
        r=r*10+(s[i]-'0');
        i++;
    }
    return r;
}

int main(){
    in>>s;
    out<<expresie();
}