Compilare: main.cpp: In function 'int main()': main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=0;i<vals.size();i++) | ~^~~~~~~~~~~~ main.cpp:29:24: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | v[i+1]=nrm[s[i]]; | ^ main.cpp:54:22: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 54 | bool ok=0; | ^~