#include <cstdio>
#define maxn 100010

char buffer[maxn],*p=buffer;

int prod();
int numar();

int eval()
{
    int r=prod();
    while(*p=='+' || *p=='-')
    {
        if(*p=='+') p++,r+=prod();
      else p++,r-=prod();

    }


    return r;

}

int prod()
{
    int r=numar();
    while(*p=='*'|| *p=='/')
    {
        if(*p=='*') p++,r*=numar();
        else p++,r/=numar();
    }
    return r;
}

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

    return r;
}


int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    fgets(buffer,maxn,stdin);
    printf("%d",eval());
    return 0;
}