Compilare: main.cpp: In function 'void solve()': main.cpp:21:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (long long i = 1; i < aux.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:25:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (long long i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:61:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (long long i = 0; i < a.size(); i++) | ~~^~~~~~~~~~