Eroare de compilare: main.cpp:9:8: error: unable to find numeric literal operator 'operator""N' int vf[2N], urm[2N], lst[N], nr; ^~ main.cpp:9:8: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes main.cpp:9:17: error: unable to find numeric literal operator 'operator""N' int vf[2N], urm[2N], lst[N], nr; ^~ main.cpp:9:17: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes main.cpp: In function 'void dfs_desc(int)': main.cpp:19:38: error: 'urm' was not declared in this scope for (int p = lst[x]; p != 0; p = urm[p]) ^~~ main.cpp:21:17: error: 'vf' was not declared in this scope int y = vf[p]; ^~ main.cpp: In function 'void dfs_total(int)': main.cpp:34:38: error: 'urm' was not declared in this scope for (int p = lst[x]; p != 0; p = urm[p]) ^~~ main.cpp:36:17: error: 'vf' was not declared in this scope int y = vf[p]; ^~ main.cpp: In function 'void pushback(int, int)': main.cpp:47:5: error: 'vf' was not declared in this scope vf[++nr] = y; ^~ main.cpp:48:5: error: 'urm' was not declared in this scope urm[nr] = lst[x]; ^~~ main.cpp: In function 'int main()': main.cpp:60:24: error: 'push__back' was not declared in this scope push__back(y, x); ^ Non zero exit status: 1