Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:57:18: error: no match for ‘operator[]’ (operand types are ‘bool [100001]’ and ‘nod’) if (!used[*it]) { ^ user.cpp:58:20: error: cannot convert ‘nod’ to ‘int’ for argument ‘1’ to ‘void dfs(int)’ dfs(*it); ^ user.cpp: In function ‘void cit(int&)’: user.cpp:15:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(ax, 1, dim, stdin), pz = 0; ^ user.cpp:19:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(ax, 1, dim, stdin), pz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:67:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cerere.in", "r", stdin); ^ user.cpp:68:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cerere.out", "w", stdout); ^