#include<fstream>
#include<cstring>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100002];
int n,i=1;

int factor();
int termen();

int calc()
{
    int x;
    x=termen();
    while(s[i]=='+'||s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            x+=termen();
        }
        else
        {
            i++;
            x-=termen();
        }
    }
    return x;
}

int termen()
{
    int x=factor();
    while(s[i]=='*'||s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            x*=termen();
        }
        else
        {
            i++;
            x/=termen();
        }
    }
    return x;
}

int factor()
{
    int x=0;
    if(s[i]=='(')
    {
        i++;
        x=calc();
        i++;
    }
    else
    {
        while(s[i]>='0'&&s[i]<='9')
        {
            x*=10;
            x+=s[i]-48;
            i++;
        }
    }
    return x;
}

int main()
{
    int sol;
    f.getline(s+1,100001);
    n=strlen(s+1);
    sol=calc();
    g<<sol;
    return 0;
}