Compilare: main.cpp: In function 'void solve(std::vector<int>)': main.cpp:36:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | while (pa < a.size() && pb < b.size()) { | ~~~^~~~~~~~~~ main.cpp:36:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | while (pa < a.size() && pb < b.size()) { | ~~~^~~~~~~~~~