Compilare: main.cpp: In function 'int main()': main.cpp:33:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i=0; i<l[last].size(); i++) | ~^~~~~~~~~~~~~~~ main.cpp:36:39: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 36 | if((cod >> x) & 1 ==0) | ~~^~~