Compilare: main.cpp: In function 'void f(int)': main.cpp:19:18: warning: comparison of integer expressions of different signedness: 'std::vector<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 19 | if (a.size() < halfSize && (a.size() >= b.size() || (a.size() < b.size() && b[a.size()] == arr[idx]))){ | ~~~~~~~~~^~~~~~~~~~ main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'std::vector<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | if (b.size() < halfSize && (b.size() >= a.size() || (b.size() < a.size() && a[b.size()] == arr[idx]))){ | ~~~~~~~~~^~~~~~~~~~