Compilare: main.cpp: In function 'void add(ll, ll)': main.cpp:37:9: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(now == s.size()) { | ~~~~^~~~~~~~~~~ main.cpp: In function 'void remove(ll, ll)': main.cpp:52:9: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | if(now == s.size()){ | ~~~~^~~~~~~~~~~ main.cpp: In function 'll numara(ll, ll)': main.cpp:61:9: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | if(now == s.size()) return a[i].count; | ~~~~^~~~~~~~~~~ main.cpp: In function 'll search(ll, ll)': main.cpp:67:9: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | if(now == s.size()) return now; | ~~~~^~~~~~~~~~~