#include<fstream>
using namespace std;
ifstream F("evaluare.in");
ofstream G("evaluare.out");
string s;
int i;
int A(int x)
{
    int r;
    char o;
    if(!x)
        for(r=A(1),o=s[i];o=='+'||o=='-';++i,r=o=='+'?r+A(1):r-A(1),o=s[i]);
    else if(x==1)
        for(r=A(2),o=s[i];o=='*'||o=='/';++i,r=o=='*'?r*A(2):r/A(2),o=s[i]);
    else if(s[i]=='(')
        ++i,r=A(0),++i;
    else
        for(r=0;s[i]>47&&s[i]<58;r=10*r+s[i++]-48);
    return r;
}
int main()
{
    return F>>s,G<<A(0),0;
}