Compilare: main.cpp: In function 'void solve()': main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int i = 1; i < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp:59:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for (int i = a.size(); i < b.size(); i++){ | ~~^~~~~~~~~~ main.cpp:77:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int p = 0; p < occurences.size() && p <= 999; p++){ | ~~^~~~~~~~~~~~~~~~~~~