#include <iostream>
#include <fstream>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100001],*p;
int r;
int eval();
int termene();
int factor();
int main()
{
    f.getline(s,3000);
    p=s;
    r=eval();
    g<<r;
    return 0;
}
int eval()
{
    int r=termene();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+') p++,r+=termene();
        else p++,r-=termene();
    }
    return r;
}


int termene()
{
    int r=factor();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*') p++,r*=factor();
        else p++,r/=factor();
    }
    return r;
}


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