#include <bits/stdc++.h>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char E[100010],*p;
int S(),P(),F();
int main()
{
    f>>E;
    p=E;
    g<<S();
    return 0;
}
int S()
{
    //calculeaza o suma de termeni (Produse)
    int r=P();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+'){p++;r+=P();}
        else {p++;r-=P();}
    }
    return r;
}
int P()
{
    //calculeaza un produs de factori (Paranteze sau numere)
    int r=F();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*'){p++;r*=F();}
        else {p++;r/=F();}
    }
    return r;
}
int F()
{
    //Obs Paranteze=Bracket
    //Calculeaza un factor al unui produs
    //Factor = ( Suma ) sau
    //Factor = numar
    int r;
    if(*p=='(')
    {
        p++;r=S();p++;
    }
    else
    {
        r=0;
        while(isdigit(*p))//*p>='0'&&*p<='9'
        {
            r=10*r+*p-'0';
            p++;
        }
    }
    return r;
}