#include <bits/stdc++.h>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");

char E[100010],*p;
int sum(),prod(),fact(),num();

int main()
{
    p=E;
    f>>p;
    g<<sum();
    return 0;
}
int sum()
{
    int rez=prod();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+'){p++;rez+=prod();}
        else {p++;rez-=prod();}
    }
    return rez;
}
int prod()
{
    int rez=fact();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*'){p++;rez*=fact();}
        else {p++;rez/=fact();}
    }
    return rez;
}
int fact()
{
    if(*p=='(')
    {
        p++;
        int rez=sum();
        p++;
        return rez;
    }
    return num();
}
int num()
{
    int rez=0;
    while(isdigit(*p)){rez=10*rez+*p-'0';p++;}
    return rez;
}