Compilare: user.cpp: In function ‘void getDepths(int, std::deque<long long int>&)’: user.cpp:43:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sonSet.size(); ++i) ~~^~~~~~~~~~~~~~~ user.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < rez.size(); ++i) { ~~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:60:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:62:31: 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:64:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^