#include <bits/stdc++.h>

using namespace std;

using ll = long long;

pair<bool, ll> update(ll cur, ll nxt, char op){
    if (op == '/') {
        if (nxt == 0 || cur % nxt != 0) {
            return {false, -1};
        }
        return {true, cur / nxt};
    }
    if (op == '*') return {true, cur * nxt};
    if (op == '+') return {true, cur + nxt};
    return {true, cur - nxt};
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    vector<char> v = {'+', '-', '*', '/'};
    ll x, y, z;
    cin >> x >> y >> z;
    ll ans = x + y + z;
    for (char op1 : v){
        for (char op2 : v){
            ll cur = x;
            auto a = update(cur, y, op1);
            auto b = update(a.second, z, op2);
            if (a.first && b.first && b.second >= 0 && b.second < ans)
                ans = b.second;
        }
    }
    cout << ans;
}