#include <iostream>
#include <fstream>
#include <math.h>

#define MAX 100010
using namespace std;
char S[MAX],*p=S;
long termen();
long factor();
long putere();
long pow(long r,long x)
{
    int aux=1;
    for(int i=1;i<=x;i++)
        aux*=r;
    return aux;
}
long eval()
{
    long r=factor();
    while(*p=='+' || *p=='-')
        {
            switch(*p)
            {
            case '+':
                p++;
                r+=factor();
                break;
            case '-':
                ++p;
                r-=factor();
                break;
            }
        }
    return r;
}
long factor()
{
    long r=putere();
    while(*p=='*' || *p=='/')
    {
        switch(*p)
        {
        case '*':
             p++;
             r*=putere();
             break;
        case '/':
            p++;
            r/=putere();
        }
    }
    return r;
}
long putere()
{
    long r=termen();
    while(*p=='^')
    {
        p++;
        r=pow(r,*p-'0');
        p++;
    }
    return r;
}
long termen()
{
    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()
{
        freopen("evaluare.out","w",stdout);
        fgets(S, MAX, fopen("evaluare.in", "r"));
        printf("%ld\n",eval());

    return 0;
}