#include <fstream>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100005],*p;
int eval();
int termen();
int factor();
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;
}
int termen ()
{
    int r=factor();
    while(*p=='*'||*p=='/')
        if(*p=='*')
    {
        p++;
        r*=factor();
    }
    else
    {
        p++;
        r/=factor();
    }
    return r;
}
int eval()
{
    int r=termen();
    while(*p=='+'||*p=='-')
        if(*p=='+')
    {
        p++;
        r+=termen();
    }
    else { p++;    r-=termen(); }
   return r;
}
int main()
{
    f.getline(s,100005);
    p=s;
    g<<eval();

}