Compilare: user.cpp: In function ‘void parcurg_euler(int, int)’: user.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:44:29: warning: operation on ‘y’ may be undefined [-Wsequence-point] if(f[x]>f[y])x=x^y^(y=x); // interschimba x cu y ^ /tmp/ccXREcPC.o: In function `main': user.cpp:(.text.startup+0x50): warning: the `gets' function is dangerous and should not be used.