Compilare: main.cpp: In function 'bool check_freq(strfreq, long long int, long long int)': main.cpp:35:10: warning: unused variable 'cnt' [-Wunused-variable] 35 | int i, cnt; | ^~~ main.cpp: In function 'long long int get_first_bigger_element(strfreq)': main.cpp:62:12: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | while (i < vcif.size() && A.f[vcif[i] - '0'] > 0) { | ~~^~~~~~~~~~~~~ main.cpp:68:9: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | if (i == vcif.size()) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void bkt(long long int, long long int, long long int, long long int)': main.cpp:126:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | if (sum >= vcif.size() && check_freq(crtfreq, k, p)) { | ~~~~^~~~~~~~~~~~~~ main.cpp:128:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | if (sum == vcif.size()) { | ~~~~^~~~~~~~~~~~~~ main.cpp: In function 'long long int get_smallest_number(strfreq)': main.cpp:110:3: warning: 'cif' is used uninitialized in this function [-Wuninitialized] 110 | if (cif == 10) | ^~