Compilare: main.cpp: In function 'int calculatelps(std::__cxx11::string, int, int, int)': main.cpp:19:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<a.size();i++){ ~^~~~~~~~~ main.cpp: In function 'void afis(int, int)': main.cpp:39:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<s[i].size();i++) ~^~~~~~~~~~~~ main.cpp:49:44: warning: array subscript has type 'char' [-Wchar-subscripts] for(int i=s[id].size()-cost[prv[id][mask]][id];i<s[id].size();i++) ^ main.cpp:49:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=s[id].size()-cost[prv[id][mask]][id];i<s[id].size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:23: warning: 'idsol' may be used uninitialized in this function [-Wmaybe-uninitialized] afis(idsol,(1<<n)-1); ^