#include <cstdio>
#include <stack>
#include <cstring>
using namespace std;

char s[100005];
int i=0;
int num();
int mult();
int solve()
{
    int t=mult();
    while(s[i]=='+'||s[i]=='-')
    {
        if(s[i]=='+')
        {
            i++;
            t+=mult();
        }
        else{
            i++;
            t-=mult();
        }
    }
    return t;
}
int mult()
{
    int t=num();
    while(s[i]=='*'||s[i]=='/')
    {
        if(s[i]=='*')
        {
            i++;
            t*=num();
        }
        else{
            i++;
            t/=num();
        }
    }
    return t;
}
int num()
{
    int t=0;
    if(s[i]=='(')
    {
        i++;
        t=solve();
        i++;
    }
    else{
        while(s[i]<='9' && s[i]>='0')
        {
            t=t*10+s[i]-'0';
            i++;
        }
    }
    return t;
}
int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    scanf("%s",s);
    int n=strlen(s);
    printf("%d",solve());
    return 0;
}