class Solution { public: int invalid = 1; int StrToInt(string str) { bool minus = false; int index = 0; long long num = 0; if(str.size() != 0 && str[index] != '
class Solution { public: int invalid = 1; int StrToInt(string str) { bool minus = false; int index = 0; long long num = 0; if(str.size() != 0 && str[index] != '