#include <bits/stdc++.h>

using namespace std;
char s[100005],*p;
int produs(),para_nr();
int suma()
{
    int val=produs();
    while(*p=='+'||*p=='-')
    {
        if(*p=='+')
        {
            p++;
            val+=produs();
        }
        else
        {
            p++;
            val-=produs();
        }
    }
    return val;
}
int produs()
{
    int val=para_nr();
    while(*p=='*'||*p=='/')
    {
        if(*p=='*')
        {
            p++;
            val*=para_nr();
        }
        else
        {
            p++;
            val/=para_nr();
        }
    }
    return val;
}
int para_nr()
{
    int val;
    if(*p=='(')
    {
        p++;
        val=suma();
        p++;
        return val;
    }
    val=0;
    while(*p>='0'&&*p<='9')
    {
            val=val*10+(*p-'0');
            p++;
    }
    return val;
}
int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    scanf("%s",&s);
    p=s;
    printf("%d",suma());
    return 0;
}