#include <fstream>

using namespace std;
string s;
int i;
bool cif(char c)
{
    return (c>='0' and c<='9');
}
int getexp();
int getfactor()
{
    int nr=0;
    if(s[i]=='(')
    {
        i++;
        nr=getexp();
        i++;
    }
    while(cif(s[i]))
    {
        nr=nr*10+s[i]-'0';
        i++;
    }
    return nr;
}
int getterm()
{
    int nr=getfactor();
    while(s[i]=='*' or s[i]=='/' )
    {
        i++;
        if(s[i-1]=='*') nr*=getfactor();
        if(s[i-1]=='/') nr/=getfactor();
    }

    return nr;
}
int getexp()
{
    int nr=getterm();
    while(s[i]=='+' or s[i]=='-')
    {
        i++;
        if(s[i-1]=='+') nr+=getterm();
        if(s[i-1]=='-') nr-=getterm();
    }
    return nr;
}
int main()
{
    ifstream f("evaluare.in");
    ofstream g("evaluare.out");
    f>>s;
    g<<getexp();
    return 0;
}