Compilare: main.cpp: In function 'void bktr(int)': main.cpp:57:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 57 | if (validare(niv)) | ^ main.cpp: In function 'void selectare()': main.cpp:67:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 67 | if (lant.size() > lungime_minima) | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:70:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | if (lant.size() == lungime_minima) | ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~