Compilare: user.cpp: In member function ‘int& node::Map::operator[](char)’: user.cpp:18:22: warning: reference to local variable ‘p’ returned [-Wreturn-local-addr] for(auto p : V) ^ user.cpp: In function ‘int main()’: user.cpp:85:18: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin>>Txt + i*64; ^ user.cpp:78:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.in", "r", stdin); ^ user.cpp:79:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("seti.out", "w", stdout); ^