split() 함수

vector<string> split(string input, string delimiter) { vector<string> ret; long long pos = 0; string token = ""; while ((pos = input.find(delimiter)) != string::npos) { token = input.substr(0, pos); ret.push_back(token); input.erase(0, pos + delimiter.length()); } ret.push_back(input); return ret; }