#include <fstream>
using namespace std;
ifstream cin("evaluare.in");
ofstream cout("evaluare.out");
char s[100001];
int i;
int expresie();
int termen();
int factor();
int constanta();
int main()
{
    cin>>s;
    cout<<expresie();
    return 0;
}
int expresie()
{
    int r = termen();
    while(s[i]=='+'||s[i]=='-')
    {
        if(s[i]=='+')
            i++,r+=termen();
        else i++,r-=termen();
    }
    return r;
}
int termen()
{
    int r = factor();
    while(s[i]=='*'||s[i]=='/')
    {
        if(s[i]=='*')
            i++,r*=factor();
        else i++,r/=factor();
    }
    return r;
}
int factor()
{
    int r;
    if(s[i]=='(')
    {
        i++; ///sari peste '('
        r = expresie();
        i++; ///sari peste ')'
    }
    else r = constanta();
    return r;
}
int constanta()
{
    int r = 0;
    while('0'<=s[i]&&s[i]<='9')
        r = r * 10 + (s[i]-'0'), i++;
    return r;
}