/**
  *  Worg
  */
#include <cstdio>
#include <cstring>

#define DIM 100100

using namespace std;
FILE *fin=freopen("evaluare.in","r",stdin);
FILE *fout=freopen("evaluare.out","w",stdout);

char S[DIM], *s = S;

int eval();
int numar();
int factor();

int val(char c)
{
    return c - '0';
}

int eval()
{
    int ret = numar();

    while( *s == '+' || *s == '-' )
    {
        if( *s == '+' )
        {
            ++s;
            ret += numar();
        }
        else
        {
            ++s;
            ret -= numar();
        }
    }
    return ret;
}

int numar()
{
    int ret = factor();

    while( *s == '/' || *s == '*' )
    {
        if( *s == '*' )
        {
            ++s;
            ret *= factor();
        }

        else
        {
            ++s;
            ret /= factor();
        }
    }
    return ret;
}

int factor()
{
    int ret = 0;

    if( *s == '(' )
    {
        ++s;
        ret = eval();
        ++s;
    }

    else
        while( '0' <= *s && '9' >= *s )
        {
            ret = ret * 10 + val( *s );
            ++s;
        }
    return ret;
}

int main()
{
    gets(S);
    printf("%d", eval());
}