Compilare: main.cpp: In function 'void verif(long long int)': main.cpp:64:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pq1.size() < k/2) { ~~~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:78:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%lld%lld", &n, &k ) ; ^ main.cpp:80:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%lld", &v[i] ) ; ^