Compilare: user.cpp: In function ‘int main()’: user.cpp:58:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i ++) ^ user.cpp:90:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < aux.size();j ++) ^ user.cpp:22:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d\n",&p,&n); ^ user.cpp:25:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(v[i],cmax+5,in); ^