#include <fstream>
#include <cstring>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100100],*p;
int numar()
{
    int nr=0;
    while(*p>='0'&&*p<='9')
    {
        nr=nr*10+*p-'0';
        ++p;
    }
    return nr;
}
int expresie ();
int termen ();
int factor ();
int main()
{
    f>>s;
    p=s;
    g<<expresie();
    return 0;
}
int expresie()
{
    int r=termen();
    while(*p=='+'||*p=='-')
        if(*p=='+'){++p;r+=termen();}
         else if(*p=='-'){++p;r-=termen();}
    return r;
}
int termen ()
{
    int r=factor();
    while(*p=='*'||*p=='/')
        if(*p=='*'){++p;r*=factor();}
         else if(*p=='/'){++p;r/=factor();}
    return r;
}
int factor()
{
    int r;
    if(*p=='('){++p;r=expresie();++p;}
    else r= numar();
    return r;
}