Compilare: main.cpp: In function 'int main()': main.cpp:36:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(i=0;i<a.size();i++){ | ~^~~~~~~~~ main.cpp:37:32: warning: array subscript has type 'char' [-Wchar-subscripts] 37 | if(!t[x].fiu[d[a[i]]]){k++; | ^ main.cpp:38:32: warning: array subscript has type 'char' [-Wchar-subscripts] 38 | t[x].fiu[d[a[i]]]=k; | ^ main.cpp:40:36: warning: array subscript has type 'char' [-Wchar-subscripts] 40 | }else x=t[x].fiu[d[a[i]]]; | ^ main.cpp:44:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(i=0;i<s.size();++i){ | ~^~~~~~~~~ main.cpp:47:32: warning: array subscript has type 'char' [-Wchar-subscripts] 47 | if(!t[x].fiu[d[s[j]]]) break; | ^ main.cpp:48:30: warning: array subscript has type 'char' [-Wchar-subscripts] 48 | x=t[x].fiu[d[s[j]]]; | ^