Compilare: main.cpp: In function 'long long int Solve(std::vector<int>&, int)': main.cpp:10:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 10 | for (int i = 0, j = 0; i < v.size(); ++i) { | ~~^~~~~~~~~~ main.cpp:12:37: warning: comparison of integer expressions of different signedness: 'std::unordered_map<unsigned int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 12 | while (j < i && freq.size() > K) { | ~~~~~~~~~~~~^~~