Compilare: main.cpp: In member function 'InParser& InParser::operator>>(long long int&)': main.cpp:11:107: warning: this 'while' clause does not guard... [-Wmisleading-indentation] int a[N]; ^ main.cpp:12:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' vector <int> u[N]; ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:8:19: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] ^