#include <fstream>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
int eval();
int termen();
int factor();
char s[100005],*p;
int eval(){
int r;
r=termen();
while(*p=='+' || *p=='-')
if(*p=='+'){++p;
r+=termen();}
else{++p; r-=termen();}
return r;
}
int termen(){
int r;
r=factor();
while(*p=='*' || *p=='/')
if(*p=='*'){p++; r*=factor();}
else{++p; r/=factor();}
return r;
}
int factor ()
{int r;
    r=0;
    if(*p=='(')
    {
        ++p;
        r=eval();
        ++p;
    }
    else while(*p>='0' && *p<='9')
    {
        r=r*10+(int)*p-'0';
        ++p;
    }
    return r;
}
int main()
{
   f.getline(s,100005);
   p=s;
   g<<eval();
    return 0;
}