#include <bits/stdc++.h>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

char e[100060];
int p,i;
int eval(), t(), f();

int eval(){
int r;
r= t();
while (e[p]=='-'||e[p]=='+')
{
    if (e[p]=='-')
    {
        p++;
        r-=t();
    }
    else
    {
        p++;
        r+=t();
    }
}
return r;
}
int t(){
int r=f();
while (e[p]=='*'||e[p]=='/')
{
    if (e[p]=='/')
    {
        p++;
        r/=f();
    }
    else
    {
        p++;
        r*=f();
    }
}
return r;
}

int f(){
int r=0;
if (e[p]=='(')
{
    p++;
    r=eval();
    p++;
}
else while (e[p]>='0'&&e[p]<='9')
{
    r=r*10+e[p]-'0';
    p++;
}
return r;
}

int main()
{
    fin>>e;
    fout<<eval();
    return 0;
}