Compilare: user.cpp: In function ‘int searchNode(int, int)’: user.cpp:85:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<nd.size(); ++i) ^ user.cpp: In function ‘void erasePath(int, int)’: user.cpp:93:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[f].size(); ++i) ^ user.cpp: In function ‘void task2()’: user.cpp:114:14: warning: variable ‘ok1’ set but not used [-Wunused-but-set-variable] bool ok1,ok2; ^ user.cpp:114:18: warning: variable ‘ok2’ set but not used [-Wunused-but-set-variable] bool ok1,ok2; ^ user.cpp:126:9: warning: ‘root’ may be used uninitialized in this function [-Wmaybe-uninitialized] int root; ^