Compilare: user.cpp: In constructor ‘KthLargest::OpExecutor::OpExecutor(std::vector<unsigned int>&)’: user.cpp:227:64: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(elements[i] == lastVal && i < elements.size() - 1) ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:558:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(size_t i = 0; i < inputSize; ++i) ^ user.cpp:565:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(size_t i = 0; i < opCount; ++i) ^