Compilare: main.cpp: In function 'void div(long long int)': main.cpp:30:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<d.size(); i++) ~^~~~~~~~~ main.cpp:32:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i; j<d.size(); j++) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:59:33: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<Gigel>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",ans.size()); ^ main.cpp:77:33: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::set<Gigel>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n",ans.size()); ^ main.cpp:41:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("armonica.in","r",stdin); ^ main.cpp:42:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("armonica.out","w",stdout); ^ main.cpp:45:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&b); ^