#include <cstdio>

using namespace std;
char s[100005],*p;
int val;

int eval();
int termen();
int factor();

int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w", stdout);

    scanf("%s", &s);
    p=s;
    val=eval();
    printf ("%d\n", val);

    return 0;
}
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;

}