#include <cstdio>
using namespace std;
const long MAX = 100010;
char S[MAX], *p=S;
FILE *read = fopen("evaluare.in","r");
FILE *write = fopen("evaluare.out","w");
long termen();
long factor();
long eval()
{
    long r = termen();
    while ( *p=='+' || *p=='-' )
    {
        switch ( *p )
        {
        case '+':
            ++p;
            r += termen();
            break;
        case '-':
            ++p;
            r -= termen();
            break;
        }
    }
    return r;
}
long termen()
{
    long r = factor();
    while ( *p=='*' || *p=='/' )
    {
        switch ( *p )
        {
        case '*' :
            ++p;
            r *= factor();
            break;
        case '/':
            ++p;
            r /= factor();
            break;
        }
    }
    return r;
}
long factor()
{
    long r=0;
    if ( *p == '(' )
    {
        ++p;
        r = eval();
        ++p;
    }
    else
    {
        while ( *p>='0' && *p<='9' )
        {
            r = r*10 + *p - '0';
            ++p;
        }
    }
    return r;
}
int main()
{
    fgets(S,MAX,read);
    fclose(read);
    fprintf(write,"%ld\n",eval());
    fclose(write);
}