Compilare: user.cpp: In function ‘void solve()’: user.cpp:50:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(muchii[i].size()>max1) ~~~~~~~~~~~~~~~~^~~~~ user.cpp:58:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(muchii[i].size()>max2) ~~~~~~~~~~~~~~~~^~~~~ user.cpp: In function ‘void citire()’: user.cpp:17:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i %i",&p,&n); ^ user.cpp:20:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i",&k); ^ user.cpp:23:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i ",&a); ^