Compilare: main.cpp: In member function 'InParser& InParser::operator>>(int&)': main.cpp:32:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while (!isdigit(c = read_ch()) && c != '-'); ^~~~~ main.cpp:33:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' n = c - '0'; ^ main.cpp: In member function 'InParser& InParser::operator>>(long long int&)': main.cpp:45:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while (!isdigit(c = read_ch())); ^~~~~ main.cpp:46:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' n = c - '0'; ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:17:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^ main.cpp: In function 'void dfs(int)': main.cpp:152:17: warning: 'care' may be used uninitialized in this function [-Wmaybe-uninitialized] hv[nod] = care; ~~~~~~~~^~~~~~