#include <fstream>
#include <cstring>

using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100001],*p;
int eval();
int term();
int fact();

int main()
{
    f.getline(s+1,100001);
    s[0]='(';
    int N= strlen(s);
    s[N]=')';
    s[N+1]='\0';
    p=s;
    g<<eval();
    return 0;
}
int term()
{
    int r;
    r=fact();
    while(*p=='*'||*p=='/'){
        if(*p=='*') {++p; r*=fact();}
        else {++p; r/=fact();}
    }
    return r;
}
int eval()
{
    int r;
    r=term();
    while(*p=='+'||*p=='-'){
        if(*p=='+') {++p; r+=term();}
        else {++p; r-=term();}
    }
    return r;
}
int fact()
{
    int r;
    r=0;
    if(*p=='(')
    {
        ++p;
        r=eval();
        ++p;
    }
    else
        while(*p>='0'&&*p<='9')
        {
            r=r*10+(*p-'0');
            p++;
        }
    return r;
}