Compilare: main.cpp: In function 'int main()': main.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<vals.size();i++) | ~^~~~~~~~~~~~ main.cpp:27:24: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | v[i+1]=nrm[s[i]]; | ^ main.cpp:52:22: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 52 | bool ok=0; | ^~ main.cpp:64:14: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 64 | bool ok=0; | ^~