#include <bits/stdc++.h>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
char s[100001];
int i;
int termen();
int factor();
int expresie()
{
    int t=termen();
    while(s[i]=='+'||s[i]=='-')
        if(s[i]=='+')
            i++,t=t+termen();
        else i++,t=t-termen();
    return t;
}

int main()
{
    fin.get(s,100001);
    fout<<expresie();

    return 0;
}
int termen()
{
    int t=factor();
    while(s[i]=='*'||s[i]=='/')
        if(s[i]=='*')
            i++,t=t*factor();
        else i++,t=t/factor();
    return t;

}
int factor()
{
    int t=0;
    if(s[i]=='(')
    {
        i++, t=expresie(),i++;
    }
    else
    {
        while (s[i]>='0' && s[i]<='9')
        {
            t=t*10+(s[i]-'0');
            i++;
        }
    }
    return t;

}