Compilare: main.cpp: In function 'bool verificare()': main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v.size() != n) return 0; ~~~~~~~~~^~~~ main.cpp: In function 'void bkk()': main.cpp:39:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v.size() == n) { ~~~~~~~~~^~~~ main.cpp:33:9: warning: unused variable 'k' [-Wunused-variable] int k = v.size(); ^