#include <iostream>
#include <cstdio>
#include <cstring>

using namespace std;

char exp[100005];

int operatie(char op, int st, int dr){
    if(op == '+')
        return st + dr;
    else if(op == '-')
        return st - dr;
    else if(op == '*')
        return st * dr;
    return st / dr;
}

int caut(int st, int dr, char s1, char s2){
    int p = 0;
    for(int i=dr;i>=st;--i){
        if(exp[i]==')')
            --p;
        else if(exp[i]=='(')
            ++p;
        else if((exp[i]==s1 || exp[i]==s2) && p==0)
            return i;
    }
    return -1;
}

int numar(int st, int dr){
    int ret = 0;
    for(int i=st;i<=dr;++i)
        ret = ret * 10 +exp[i]-'0';
    return ret;
}

int evaluare(int st, int dr){
    int p = caut(st,dr,'+','-');
    if(p!=-1)
        return operatie(exp[p], evaluare(st,p-1), evaluare(p+1,dr));
    p = caut(st,dr,'*','/');
    if(p!=-1)
        return operatie(exp[p], evaluare(st,p-1), evaluare(p+1,dr));
    if(exp[st] == '(' && exp[dr] == ')')
        return evaluare(st+1, dr-1);
    return numar(st,dr);
}

int main()
{
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);

    fgets(exp,100005,stdin);

    cout<<evaluare(0,strlen(exp)-2);

    return 0;
}