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