Compilare: user.cpp: In function ‘void getSubtreeDepths(int, std::deque<long long int>&, int)’: user.cpp:173:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dep >= depths.size()) ~~~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void calculate(int, std::deque<long long int>&, std::deque<Dreapta>&)’: user.cpp:221:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sonBatch.size(); ++i) ~~^~~~~~~~~~~~~~~~~ user.cpp:233:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sonDepth.size() - 1; ++i) ~~^~~~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:254:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:256:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &val[i]); ^ user.cpp:258:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^