Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:45:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(*itt != t[x]) ^ user.cpp:22:21: warning: unused variable ‘vecini’ [-Wunused-variable] viz[x] = 1; int vecini = 0, poz; ^ user.cpp:22:33: warning: unused variable ‘poz’ [-Wunused-variable] viz[x] = 1; int vecini = 0, poz; ^ user.cpp: In function ‘int main()’: user.cpp:74:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned i=0; i<m/2; i++) ^