#include <bits/stdc++.h>

using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

char s[100050],*p;
int r;

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++,r/=factor();

    return r;
}

int factor()
{
    int r=0;

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

    return r;
}

int main()
{
    f.getline(s,100000);
    p = s;
    g << eval();
    return 0;
}