Compilare: user.cpp: In function ‘int main()’: user.cpp:98:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i < v.size(); ++i) ^ user.cpp:161:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (cur < counts.size() - 1 && counts[pos] < counts[cur+1]) ^ user.cpp:79:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &N, &K); ^ user.cpp:85:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^