#include <iostream>
#include <cstring>
#include <cstdio>
using namespace std;
char v[1002];
int i;
int termen();
int evaluare();
int factor();
void citire()
{
    scanf("%s",&v);
}
int evaluare()
{
    int r=termen();
    while(v[i]=='-'||v[i]=='+')
        {
            if(v[i]=='+')
            {
                i++;
                r+=termen();
            }
            else
                if(v[i]=='-')
            {
                i++;
                r-=termen();
            }
        }
    return r;
}
int factor()
{
    int r=0;
    if(v[i]=='(')
    {
        i++;
        r=evaluare();
        i++;
    }
    else
    {
        while(v[i]>='0'&&v[i]<='9')
            {
                r=r*10+v[i]-'0';
                i++;
            }
    }
    return r;
}
int termen()
{
    int r=factor();
    while(v[i]=='*'||v[i]=='/')
    {
        if(v[i]=='*')
        {
            i++;
            r*=factor();
        }
        else
            if(v[i]=='/')
        {
            i++;
            r/=factor();
        }
    }
    return r;
}
void afisare()
{
    printf("%d",evaluare());
}
int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    citire();
    afisare();
    //cout << "Hello world!" << endl;
    return 0;
}