#include<bits/stdc++.h>
using namespace std;
ifstream F("evaluare.in");
ofstream G("evaluare.out");
char *c;
int A(int x)
{
    int r;
    char o;
    if(!x)
        for(r=A(1),o=*c;o=='+'||o=='-';++c,r=o=='+'?r+A(1):r-A(1),o=*c);
    else if(x==1)
        for(r=A(2),o=*c;o=='*'||o=='/';++c,r=o=='*'?r*A(2):r/A(2),o=*c);
    else if(*c=='(')
        ++c,r=A(0),++c;
    else
        for(r=0;isdigit(*c);r=10*r+*c-'0',++c);
    return r;
}
int main()
{
    return c=new char[100001],F>>c,G<<A(0),0;
}