posta.cpp: In function 'int solve(int, int)': posta.cpp:16: warning: comparison between signed and unsigned integer expressions posta.cpp: In function 'void parcurgere_euler(int, int)': posta.cpp:30: warning: comparison between signed and unsigned integer expressions posta.cpp: In function 'int main()': posta.cpp:54: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x posta.cpp:54: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x posta.cpp:55: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x posta.cpp:55: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x posta.cpp:64: warning: comparison between signed and unsigned integer expressions