Compilare: user.cpp: In function ‘int unite(int, int)’: user.cpp:28:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void citire()’: user.cpp:34:19: warning: unused variable ‘y’ [-Wunused-variable] for (int i=1, y, x, c; i<=M; i++) ^ user.cpp:34:22: warning: unused variable ‘x’ [-Wunused-variable] for (int i=1, y, x, c; i<=M; i++) ^ user.cpp:34:25: warning: unused variable ‘c’ [-Wunused-variable] for (int i=1, y, x, c; i<=M; i++) ^ user.cpp: In function ‘void rezolvare()’: user.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<sol.size(); i++) ~^~~~~~~~~~~