#define _CRT_SECURE_NO_WARNINGS
//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
//#define int ll
//#define endl "\n"
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
#define all(c) (c).begin(), (c).end()
#define loop(i,a,b) for(ll i=a; i<ll(b); i++)
#define rep(i,b) loop(i,0,b)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
template<class T> ostream & operator<<(ostream & os, vector<T> const &);
template<int n, class...T> typename enable_if<(n>=sizeof...(T))>::type _ot(ostream &, tuple<T...> const &){}
template<int n, class...T> typename enable_if<(n< sizeof...(T))>::type _ot(ostream & os, tuple<T...> const & t){ os << (n==0?"":" ") << get<n>(t); _ot<n+1>(os, t); }
template<class...T> ostream & operator<<(ostream & os, tuple<T...> const & t){ _ot<0>(os, t); return os; }
template<class T, class U> ostream & operator<<(ostream & os, pair<T,U> const & p){ return os << "(" << p.first << ", " << p.second << ") "; }
template<class T> ostream & operator<<(ostream & os, vector<T> const & v){ rep(i,v.size()) os << v[i] << (i+1==(int)v.size()?"":" "); return os; }
template<class T> inline bool chmax(T & x, T const & y){ return x<y ? x=y,true : false; }
template<class T> inline bool chmin(T & x, T const & y){ return x>y ? x=y,true : false; }
#ifdef DEBUG
#define dump(...) (cerr<<#__VA_ARGS__<<" = "<<mt(__VA_ARGS__)<<" ["<<__LINE__<<"]"<<endl)
#else
#define dump(...)
#endif
// ll const mod = 1000000007;
// ll const inf = 1LL<<60;

// Verify : http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1102
#include <iostream>
#include <cctype>
#include <cstdio>
#include <string>
#include <algorithm>
#include <vector>
#include <complex>
using namespace std;

char e[1000];

typedef long long ll;
typedef complex<ll> C;

inline bool valid(C x){
    ll t = max(abs(x.real()),abs(x.imag()));
    return t <= 100000000000LL;
}

class OverFlow {};

C expr(char* &p);
C term(char* &p);
C fact(char* &p);
C num(char* &p);

inline bool ispm(char c){
    return c=='+' || c=='-';
}
inline bool ispd(char c){
    return c=='*' || c=='/';
}

C num(char* &p){
    C res = 0;
    if(isdigit(*p) || *p == 'i'){
        ;
    }else{
        throw "num begin";
    }
    if(isdigit(*p)){
        while (isdigit(*p)){
            res*=10;
            res+=*p-'0';
            if(!valid(res)) throw OverFlow();
            p++;
        }
    }else{
        res = C(0,1);
        p++;
    }

    if(*p=='\0' || *p==')' || ispm(*p) || ispd(*p)){
        ;
    }else{
        throw "num end";
    }

    if(!valid(res)) throw OverFlow();
    return res;
}

C fact(char* & p){
    C res = 0;
    if(*p=='(' || isdigit(*p) || *p == 'i'){
        ;
    }else{
        throw "fact begin";
    }

    if(*p=='('){
        p++;
        res += expr(p);
        p++;
    }else if(isdigit(*p) || *p == 'i'){
        res += num(p);
    }
    if(*p=='\0' || *p==')' || ispm(*p) || ispd(*p)){
        ;
    }else{
        cout << p-e << endl;
        throw "fact end";
    }

    if(!valid(res)) throw OverFlow();
    return res;
}

C term(char* & p){
    C res;
    if(*p=='(' || isdigit(*p) || *p == 'i'){
        res = fact(p);
    }else{
        throw "term begin";
    }
    while(1){
        if(*p=='*'){
            p++;
            res *= fact(p);
        }else if(*p=='/'){
            p++;
            res /= fact(p);
        }else if(*p=='\0' || *p==')' || *p=='+' || *p=='-'){
            break;
        }else{
            throw "term end";
        }
        if(!valid(res)) throw OverFlow();
    }

    if(!valid(res)) throw OverFlow();
    return res;
}

C expr(char* & p){
    C res;
    if(*p=='(' || isdigit(*p) || *p == 'i'){
        res=term(p);
    }else{
        throw "exp begin";
    }

    while(1){
        if(*p=='+'){
            p++;
            res += term(p);
        }else if(*p=='-'){
            p++;
            res -= term(p);
        }else if(*p=='\0' || *p==')'){
            break;
        }else{
            throw "exp end";
        }
        if(!valid(res)) throw OverFlow();
    }

    return res;
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    string s;
    while(cin >> s){
        int n = s.size();
        int ans = 0;
        rep(i,n) s += s[i];
        rep(i,n){
            rep(j,n) e[j] = s[i+j];
            e[n] = 0;
            try {
                char * p = e;
                if(*p=='+' || *p=='-') throw "";
                if(*(p+n-1)=='+' || *(p+n-1)=='-') throw "";
                int x = expr(p).real();
                ans = max(x,ans);
            } catch(...){}
        }
        cout << ans << endl;
    }
}