Compilare: user.cpp: In function ‘void adauga(int)’: user.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<m[lista].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:49:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<m[lista].size(); j++) ^ user.cpp:36:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:40:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&op,&x); ^