Compilare: main.cpp: In function 'void bkt(int)': main.cpp:33:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 33 | if(cond(k)) | ^ main.cpp: In function 'int main()': main.cpp:58:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int i=0; i<sol.size(); i++) | ~^~~~~~~~~~~