func_code_string: #include <bits/stdc++.h>   using namespace std;   bool visit[4];   long long dfs(vector<long long> &v, vector<char> &chars) {     long long res = LLONG_MAX;     if (v.size() == 1) {       return v.front();     }     for (int i = 0; i < v.size() - 1; i++) {       for (int j = i + 1; j < v.size(); j++) {         vector<long long> tmp = v;         tmp.erase(tmp.begin() + i);         tmp.erase(tmp.begin() + j - 1);         long long r = 0;         if (chars.front() ==  + ) {           r = v[i] + v[j];         } else {           r = v[i] * v[j];         }         tmp.push_back(r);         vector<char> ch = chars;         ch.erase(ch.begin());         res = min(res, dfs(tmp, ch));       }     }     return res;   }   int main() {     vector<long long> v(4);     vector<char> chars(3);     for (int i = 0; i < 4; i++) {       cin >> v[i];     }     for (int i = 0; i < 3; i++) {       cin >> chars[i];     }     cout << dfs(v, chars) << endl;     return 0;   }   