#include <cstdio>
#include <cstring>
FILE *f=fopen("evaluare.in","r");
FILE *g=fopen("evaluare.out","w");

#define Nmax 100002

char s[Nmax],*p;
int n;

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

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++;
            //if(factor()!=0)
                r/=factor();
        }
    return r;
}

int factor()
{
    int r=0;
    if(*p=='(')
    {
        p++;
        r=eval();
        p++;
    }
    else
    {
        while('0'<=*p && *p<='9')
        {
            r*=10;
            r+=(int)*p-'0';
            ++p;
        }
    }
    return r;
}


int main()
{
    fgets(s,Nmax,f);
    p=s;

    n=eval();
    fprintf(g,"%d",n);

    fclose(f);
    fclose(g);

    return 0;
}