#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

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

char s[100005];
int i=0;

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

int eval()
{
    int t=termen();
    while(s[i]=='+' || s[i]=='-')
        switch(s[i])
        {
        case '+':
        {
            i++;
            t+= termen();
            break;
        }
        case '-':
        {
            i++;
            t-= termen();
            break;
        }
        }
    return t;
}

int termen()
{
    int fc=factor();
    while(s[i]=='*' || s[i]=='/')
        switch(s[i])
        {
        case '*':
        {
            i++;
            fc*= factor();
            break;
        }
        case '/':
        {
            i++;
            fc/= factor();
            break;
        }
        }
    return fc;
}

int factor()
{
    int exp=0;
    if(s[i]=='(')
    {
        i++;
        exp=eval();
        i++;
    }
    else
    {
        while(s[i]>='0' && s[i]<='9')
        {
            exp= exp*10 + (s[i]-'0');
            i++;
        }
    }
    return exp;
}

int main()
{
    f.getline(s, 100005);
    g<<eval();

    return 0;
}