Compilare: user.cpp: In function ‘void rez()’: user.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[1].size(); ++i) ^ user.cpp: In function ‘void selectare(int)’: user.cpp:81:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<L[vf].size(); ++i) ^ user.cpp: In function ‘void citire()’: user.cpp:30:34: 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:35:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d %d %d", &x, &y, &aux.cost); ^ user.cpp: In function ‘void rez()’: user.cpp:80:12: warning: ‘vfmin’ may be used uninitialized in this function [-Wmaybe-uninitialized] Z[vf]=1; ^ user.cpp:47:12: note: ‘vfmin’ was declared here int i, vfmin, j, minim; ^