Compilare: main.cpp: In function 'bool check(std::string&, std::string&, long long int)': main.cpp:53:15: 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] 53 | while ( i < b.size() && i + poz < a.size() && a[i + poz] == b[i] ) { | ~~^~~~~~~~~~ main.cpp:53:37: 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] 53 | while ( i < b.size() && i + poz < a.size() && a[i + poz] == b[i] ) { | ~~~~~~~~^~~~~~~~~~ main.cpp:56:14: 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] 56 | return i == b.size(); | ~~^~~~~~~~~~~ main.cpp: In function 'long long int search(std::string&, std::string&)': main.cpp:69:15: 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] 69 | while ( i < query.size() ) { | ~~^~~~~~~~~~~~~~