Compilare: main.cpp: In function 'void bkt(int, int)': main.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:9: warning: unused variable 'coef' [-Wunused-variable] 48 | int coef, i, j, k, ramas; | ^~~~ main.cpp:48:24: warning: unused variable 'ramas' [-Wunused-variable] 48 | int coef, i, j, k, ramas; | ^~~~~