#include <bits/stdc++.h>

using namespace std;
int i;
char ev[100010];
int termen();
int factor();
int eval()
{
    int r=factor();
    while(ev[i]=='+' || ev[i]=='-')
    {
        if(ev[i]=='+')
        {
            i++;
            r+=factor();
        }
        else
        {
            i++;
            r-=factor();
        }
    }
    return r;
}
int factor()
{
    int r=termen();
    while(ev[i]=='*'|| ev[i]=='/')
    {
        if(ev[i]=='*')
        {
            i++;
            r*=termen();
        }
        else
        {
            i++;
            r/=termen();
        }
    }
    return r;
}
int termen()
{
    int r=0;
    if(ev[i]=='(')
    {
        i++;
        r=eval();
        i++;
    }
    else
    while(ev[i]>='0' && ev[i]<='9')
    {
        r=r*10+ev[i]-'0';
        i++;
    }
    return r;
}
int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    scanf("%s",ev);
    printf("%d",eval());
}