Compilare: user.cpp: In function ‘void rez()’: user.cpp:61:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[vfmin].size(); ++i) ^ user.cpp: In function ‘void build_heap()’: user.cpp:83:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (ct=0; ct<L[1].size(); ++ct) ^ user.cpp: In function ‘void citire()’: user.cpp:39:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.cpp:42:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &a, &b, &c); ^